Vulnerability-Lookup

ubuntu-cve-2026-34978

Vulnerability from osv_ubuntu

Published

2026-04-03 22:16

Modified

2026-07-21 15:41

Summary

Details

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode 0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the job cache and previously queued jobs disappear. At time of publication, there are no publicly available patches.

Severity

6.5 (Medium)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-34978	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-34978	REPORT
	https://github.com/OpenPrinting/cups/security/adv…	REPORT
	https://ubuntu.com/security/notices/USN-8405-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cups",
            "binary_version": "2.1.3-4ubuntu0.11+esm13"
          },
          {
            "binary_name": "cups-bsd",
            "binary_version": "2.1.3-4ubuntu0.11+esm13"
          },
          {
            "binary_name": "cups-client",
            "binary_version": "2.1.3-4ubuntu0.11+esm13"
          },
          {
            "binary_name": "cups-common",
            "binary_version": "2.1.3-4ubuntu0.11+esm13"
          },
          {
            "binary_name": "cups-core-drivers",
            "binary_version": "2.1.3-4ubuntu0.11+esm13"
          },
          {
            "binary_name": "cups-daemon",
            "binary_version": "2.1.3-4ubuntu0.11+esm13"
          },
          {
            "binary_name": "cups-ipp-utils",
            "binary_version": "2.1.3-4ubuntu0.11+esm13"
          },
          {
            "binary_name": "cups-ppdc",
            "binary_version": "2.1.3-4ubuntu0.11+esm13"
          },
          {
            "binary_name": "cups-server-common",
            "binary_version": "2.1.3-4ubuntu0.11+esm13"
          },
          {
            "binary_name": "libcups2",
            "binary_version": "2.1.3-4ubuntu0.11+esm13"
          },
          {
            "binary_name": "libcupscgi1",
            "binary_version": "2.1.3-4ubuntu0.11+esm13"
          },
          {
            "binary_name": "libcupsimage2",
            "binary_version": "2.1.3-4ubuntu0.11+esm13"
          },
          {
            "binary_name": "libcupsmime1",
            "binary_version": "2.1.3-4ubuntu0.11+esm13"
          },
          {
            "binary_name": "libcupsppdc1",
            "binary_version": "2.1.3-4ubuntu0.11+esm13"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "cups",
        "purl": "pkg:deb/ubuntu/cups@2.1.3-4ubuntu0.11+esm13?arch=source\u0026distro=esm-infra-legacy/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.1.0-4ubuntu3",
        "2.1.0-5",
        "2.1.0-6",
        "2.1.0-6ubuntu1",
        "2.1.0-7",
        "2.1.2-1",
        "2.1.2-2",
        "2.1.3-1",
        "2.1.3-1build1",
        "2.1.3-3",
        "2.1.3-4",
        "2.1.3-4ubuntu0.2",
        "2.1.3-4ubuntu0.3",
        "2.1.3-4ubuntu0.4",
        "2.1.3-4ubuntu0.5",
        "2.1.3-4ubuntu0.6",
        "2.1.3-4ubuntu0.7",
        "2.1.3-4ubuntu0.8",
        "2.1.3-4ubuntu0.9",
        "2.1.3-4ubuntu0.10",
        "2.1.3-4ubuntu0.11",
        "2.1.3-4ubuntu0.11+esm1",
        "2.1.3-4ubuntu0.11+esm2",
        "2.1.3-4ubuntu0.11+esm3",
        "2.1.3-4ubuntu0.11+esm4",
        "2.1.3-4ubuntu0.11+esm5",
        "2.1.3-4ubuntu0.11+esm6",
        "2.1.3-4ubuntu0.11+esm7",
        "2.1.3-4ubuntu0.11+esm8",
        "2.1.3-4ubuntu0.11+esm9",
        "2.1.3-4ubuntu0.11+esm11",
        "2.1.3-4ubuntu0.11+esm12",
        "2.1.3-4ubuntu0.11+esm13"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cups",
            "binary_version": "2.2.7-1ubuntu2.10+esm10"
          },
          {
            "binary_name": "cups-bsd",
            "binary_version": "2.2.7-1ubuntu2.10+esm10"
          },
          {
            "binary_name": "cups-client",
            "binary_version": "2.2.7-1ubuntu2.10+esm10"
          },
          {
            "binary_name": "cups-common",
            "binary_version": "2.2.7-1ubuntu2.10+esm10"
          },
          {
            "binary_name": "cups-core-drivers",
            "binary_version": "2.2.7-1ubuntu2.10+esm10"
          },
          {
            "binary_name": "cups-daemon",
            "binary_version": "2.2.7-1ubuntu2.10+esm10"
          },
          {
            "binary_name": "cups-ipp-utils",
            "binary_version": "2.2.7-1ubuntu2.10+esm10"
          },
          {
            "binary_name": "cups-ppdc",
            "binary_version": "2.2.7-1ubuntu2.10+esm10"
          },
          {
            "binary_name": "cups-server-common",
            "binary_version": "2.2.7-1ubuntu2.10+esm10"
          },
          {
            "binary_name": "libcups2",
            "binary_version": "2.2.7-1ubuntu2.10+esm10"
          },
          {
            "binary_name": "libcupscgi1",
            "binary_version": "2.2.7-1ubuntu2.10+esm10"
          },
          {
            "binary_name": "libcupsimage2",
            "binary_version": "2.2.7-1ubuntu2.10+esm10"
          },
          {
            "binary_name": "libcupsmime1",
            "binary_version": "2.2.7-1ubuntu2.10+esm10"
          },
          {
            "binary_name": "libcupsppdc1",
            "binary_version": "2.2.7-1ubuntu2.10+esm10"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "cups",
        "purl": "pkg:deb/ubuntu/cups@2.2.7-1ubuntu2.10+esm10?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.4-7ubuntu2",
        "2.2.5-2",
        "2.2.6-2",
        "2.2.6-3",
        "2.2.6-4",
        "2.2.6-5",
        "2.2.7-1ubuntu1",
        "2.2.7-1ubuntu2",
        "2.2.7-1ubuntu2.1",
        "2.2.7-1ubuntu2.2",
        "2.2.7-1ubuntu2.3",
        "2.2.7-1ubuntu2.4",
        "2.2.7-1ubuntu2.5",
        "2.2.7-1ubuntu2.6",
        "2.2.7-1ubuntu2.7",
        "2.2.7-1ubuntu2.8",
        "2.2.7-1ubuntu2.9",
        "2.2.7-1ubuntu2.10",
        "2.2.7-1ubuntu2.10+esm1",
        "2.2.7-1ubuntu2.10+esm2",
        "2.2.7-1ubuntu2.10+esm3",
        "2.2.7-1ubuntu2.10+esm4",
        "2.2.7-1ubuntu2.10+esm5",
        "2.2.7-1ubuntu2.10+esm6",
        "2.2.7-1ubuntu2.10+esm7",
        "2.2.7-1ubuntu2.10+esm9",
        "2.2.7-1ubuntu2.10+esm10"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cups",
            "binary_version": "2.3.1-9ubuntu1.9+esm4"
          },
          {
            "binary_name": "cups-bsd",
            "binary_version": "2.3.1-9ubuntu1.9+esm4"
          },
          {
            "binary_name": "cups-client",
            "binary_version": "2.3.1-9ubuntu1.9+esm4"
          },
          {
            "binary_name": "cups-common",
            "binary_version": "2.3.1-9ubuntu1.9+esm4"
          },
          {
            "binary_name": "cups-core-drivers",
            "binary_version": "2.3.1-9ubuntu1.9+esm4"
          },
          {
            "binary_name": "cups-daemon",
            "binary_version": "2.3.1-9ubuntu1.9+esm4"
          },
          {
            "binary_name": "cups-ipp-utils",
            "binary_version": "2.3.1-9ubuntu1.9+esm4"
          },
          {
            "binary_name": "cups-ppdc",
            "binary_version": "2.3.1-9ubuntu1.9+esm4"
          },
          {
            "binary_name": "cups-server-common",
            "binary_version": "2.3.1-9ubuntu1.9+esm4"
          },
          {
            "binary_name": "libcups2",
            "binary_version": "2.3.1-9ubuntu1.9+esm4"
          },
          {
            "binary_name": "libcupsimage2",
            "binary_version": "2.3.1-9ubuntu1.9+esm4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "cups",
        "purl": "pkg:deb/ubuntu/cups@2.3.1-9ubuntu1.9+esm4?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.2.12-2ubuntu1",
        "2.3.0-6",
        "2.3.0-7",
        "2.3.0-7ubuntu1",
        "2.3.1-1ubuntu1",
        "2.3.1-2",
        "2.3.1-4",
        "2.3.1-7",
        "2.3.1-9ubuntu1",
        "2.3.1-9ubuntu1.1",
        "2.3.1-9ubuntu1.2",
        "2.3.1-9ubuntu1.3",
        "2.3.1-9ubuntu1.4",
        "2.3.1-9ubuntu1.5",
        "2.3.1-9ubuntu1.6",
        "2.3.1-9ubuntu1.7",
        "2.3.1-9ubuntu1.8",
        "2.3.1-9ubuntu1.9",
        "2.3.1-9ubuntu1.9+esm1",
        "2.3.1-9ubuntu1.9+esm3",
        "2.3.1-9ubuntu1.9+esm4"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "cups",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-bsd",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-client",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-common",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-core-drivers",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-daemon",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-ipp-utils",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-ppdc",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-server-common",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "libcups2",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "libcupsimage2",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "cups",
        "purl": "pkg:deb/ubuntu/cups@2.4.1op1-1ubuntu4.20?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.1op1-1ubuntu4.20"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.3.3op2-7ubuntu2",
        "2.4.1op1-1ubuntu1",
        "2.4.1op1-1ubuntu2",
        "2.4.1op1-1ubuntu3",
        "2.4.1op1-1ubuntu4",
        "2.4.1op1-1ubuntu4.1",
        "2.4.1op1-1ubuntu4.2",
        "2.4.1op1-1ubuntu4.4",
        "2.4.1op1-1ubuntu4.6",
        "2.4.1op1-1ubuntu4.7",
        "2.4.1op1-1ubuntu4.8",
        "2.4.1op1-1ubuntu4.9",
        "2.4.1op1-1ubuntu4.10",
        "2.4.1op1-1ubuntu4.11",
        "2.4.1op1-1ubuntu4.12",
        "2.4.1op1-1ubuntu4.15",
        "2.4.1op1-1ubuntu4.16"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "cups",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-bsd",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-client",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-common",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-core-drivers",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-daemon",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-ipp-utils",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-ppdc",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-server-common",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "libcups2t64",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "libcupsimage2t64",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "cups",
        "purl": "pkg:deb/ubuntu/cups@2.4.7-1.2ubuntu7.13?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.7-1.2ubuntu7.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.6-0ubuntu3",
        "2.4.7-1.2ubuntu2",
        "2.4.7-1.2ubuntu3",
        "2.4.7-1.2ubuntu7",
        "2.4.7-1.2ubuntu7.1",
        "2.4.7-1.2ubuntu7.2",
        "2.4.7-1.2ubuntu7.3",
        "2.4.7-1.2ubuntu7.4",
        "2.4.7-1.2ubuntu7.7",
        "2.4.7-1.2ubuntu7.9"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "cups",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-bsd",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-client",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-common",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-core-drivers",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-daemon",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-ipp-utils",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-ppdc",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-server-common",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "libcups2t64",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "libcupsimage2t64",
            "binary_version": "2.4.12-0ubuntu3.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "cups",
        "purl": "pkg:deb/ubuntu/cups@2.4.12-0ubuntu3.9?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.12-0ubuntu3.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.12-0ubuntu1",
        "2.4.12-0ubuntu2",
        "2.4.12-0ubuntu3",
        "2.4.12-0ubuntu3.3",
        "2.4.12-0ubuntu3.5"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "cups",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-bsd",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-client",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-common",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-core-drivers",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-daemon",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-ipp-utils",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-ppdc",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-server-common",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "libcups2t64",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "libcupsimage2t64",
            "binary_version": "2.4.16-1ubuntu1.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "cups",
        "purl": "pkg:deb/ubuntu/cups@2.4.16-1ubuntu1.2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.16-1ubuntu1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.12-0ubuntu3",
        "2.4.12-0ubuntu5",
        "2.4.16-1ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode 0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the job cache and previously queued jobs disappear. At time of publication, there are no publicly available patches.",
  "id": "UBUNTU-CVE-2026-34978",
  "modified": "2026-07-21T15:41:36Z",
  "published": "2026-04-03T22:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-34978"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-34978"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-f53q-7mxp-9gcr"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8405-1"
    }
  ],
  "related": [
    "USN-8405-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-34978"
  ]
}

CVE-2026-34978 (GCVE-0-2026-34978)

Vulnerability from cvelistv5 – Published: 2026-04-03 21:15 – Updated: 2026-04-06 15:42

Title

OpenPrinting CUPS: Path traversal in RSS notify-recipient-uri enables file write outside CacheDir/rss (and clobbering of job.cache)

Summary

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-06 15:39 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/OpenPrinting/cups/security/adv…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
OpenPrinting	cups	Affected: <= 2.4.16

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-34978",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-06T15:39:23.842578Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-06T15:42:42.322Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-f53q-7mxp-9gcr"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "cups",
          "vendor": "OpenPrinting",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 2.4.16"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode 0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the job cache and previously queued jobs disappear. At time of publication, there are no publicly available patches."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-03T21:15:15.921Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-f53q-7mxp-9gcr",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-f53q-7mxp-9gcr"
        }
      ],
      "source": {
        "advisory": "GHSA-f53q-7mxp-9gcr",
        "discovery": "UNKNOWN"
      },
      "title": "OpenPrinting CUPS: Path traversal in RSS notify-recipient-uri enables file write outside CacheDir/rss (and clobbering of job.cache)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-34978",
    "datePublished": "2026-04-03T21:15:15.921Z",
    "dateReserved": "2026-03-31T19:38:31.617Z",
    "dateUpdated": "2026-04-06T15:42:42.322Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

usn-8405-1

Vulnerability from osv_ubuntu

Published

2026-06-08 15:51

Modified

2026-06-08 15:51

Summary

cups vulnerabilities

Details

Ariel Silver discovered that CUPS incorrectly handled username comparisons during authorization checks. A local attacker could possibly use this issue to gain unauthorized access to restricted operations. (CVE-2026-27447)

Asim Viladi Oglu Manizada discovered that CUPS incorrectly handled notify-recipient-uri values in the RSS notifier. A remote attacker could possibly use this issue to overwrite lp-writable files and cause a denial of service. (CVE-2026-34978)

Jacob Newman discovered that CUPS incorrectly handled filter option strings when processing job attributes. An attacker could use this issue to cause CUPS to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-34979)

Asim Viladi Oglu Manizada discovered that CUPS incorrectly handled page-border values in shared PostScript queues. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2026-34980)

Asim Viladi Oglu Manizada discovered that CUPS incorrectly handled localhost authentication to attacker-controlled IPP services. A local attacker could possibly use this issue to overwrite arbitrary files and execute arbitrary code. (CVE-2026-34990)

Tomer Fichman discovered that CUPS incorrectly handled negative job-password-supported values. A local attacker could possibly use this issue to cause CUPS to crash, resulting in a denial of service. (CVE-2026-39314)

Tomer Fichman discovered that CUPS incorrectly handled temporary printer deletion. An attacker could possibly use this issue to cause CUPS to crash, resulting in a denial of service, or to execute arbitrary code. (CVE-2026-39316)

Tomer Fichman discovered that CUPS incorrectly handled certain malformed SNMP responses. An attacker could possibly use this issue to obtain sensitive information. (CVE-2026-41079)

References

URL

Type

	https://ubuntu.com/security/notices/USN-8405-1	ADVISORY
	https://ubuntu.com/security/CVE-2026-27447	REPORT
	https://ubuntu.com/security/CVE-2026-34978	REPORT
	https://ubuntu.com/security/CVE-2026-34979	REPORT
	https://ubuntu.com/security/CVE-2026-34980	REPORT
	https://ubuntu.com/security/CVE-2026-34990	REPORT
	https://ubuntu.com/security/CVE-2026-39314	REPORT
	https://ubuntu.com/security/CVE-2026-39316	REPORT
	https://ubuntu.com/security/CVE-2026-41079	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-27447",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34978",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34979",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34980",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34990",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:L",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-39314",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-39316",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-41079",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "cups",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-bsd",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-client",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-common",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-core-drivers",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-daemon",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-ipp-utils",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-ppdc",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "cups-server-common",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "libcups2",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          },
          {
            "binary_name": "libcupsimage2",
            "binary_version": "2.4.1op1-1ubuntu4.20"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "cups",
        "purl": "pkg:deb/ubuntu/cups@2.4.1op1-1ubuntu4.20?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.1op1-1ubuntu4.20"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.3.3op2-7ubuntu2",
        "2.4.1op1-1ubuntu1",
        "2.4.1op1-1ubuntu2",
        "2.4.1op1-1ubuntu3",
        "2.4.1op1-1ubuntu4",
        "2.4.1op1-1ubuntu4.1",
        "2.4.1op1-1ubuntu4.2",
        "2.4.1op1-1ubuntu4.4",
        "2.4.1op1-1ubuntu4.6",
        "2.4.1op1-1ubuntu4.7",
        "2.4.1op1-1ubuntu4.8",
        "2.4.1op1-1ubuntu4.9",
        "2.4.1op1-1ubuntu4.10",
        "2.4.1op1-1ubuntu4.11",
        "2.4.1op1-1ubuntu4.12",
        "2.4.1op1-1ubuntu4.15",
        "2.4.1op1-1ubuntu4.16"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-27447",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34978",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34979",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34980",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34990",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:L",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-39314",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-39316",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-41079",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "cups",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-bsd",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-client",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-common",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-core-drivers",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-daemon",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-ipp-utils",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-ppdc",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "cups-server-common",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "libcups2t64",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          },
          {
            "binary_name": "libcupsimage2t64",
            "binary_version": "2.4.7-1.2ubuntu7.13"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "cups",
        "purl": "pkg:deb/ubuntu/cups@2.4.7-1.2ubuntu7.13?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.7-1.2ubuntu7.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.6-0ubuntu3",
        "2.4.7-1.2ubuntu2",
        "2.4.7-1.2ubuntu3",
        "2.4.7-1.2ubuntu7",
        "2.4.7-1.2ubuntu7.1",
        "2.4.7-1.2ubuntu7.2",
        "2.4.7-1.2ubuntu7.3",
        "2.4.7-1.2ubuntu7.4",
        "2.4.7-1.2ubuntu7.7",
        "2.4.7-1.2ubuntu7.9"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-27447",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34978",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34979",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34980",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34990",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:L",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-39314",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-39316",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-41079",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:25.10"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "cups",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-bsd",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-client",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-common",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-core-drivers",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-daemon",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-ipp-utils",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-ppdc",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "cups-server-common",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "libcups2t64",
            "binary_version": "2.4.12-0ubuntu3.9"
          },
          {
            "binary_name": "libcupsimage2t64",
            "binary_version": "2.4.12-0ubuntu3.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "cups",
        "purl": "pkg:deb/ubuntu/cups@2.4.12-0ubuntu3.9?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.12-0ubuntu3.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.12-0ubuntu1",
        "2.4.12-0ubuntu2",
        "2.4.12-0ubuntu3",
        "2.4.12-0ubuntu3.3",
        "2.4.12-0ubuntu3.5"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-27447",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34978",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34979",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34980",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-34990",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:H/SI:H/SA:L",
                  "type": "CVSS_V4"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-39314",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-39316",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-41079",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "cups",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-bsd",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-client",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-common",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-core-drivers",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-daemon",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-ipp-utils",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-ppdc",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "cups-server-common",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "libcups2t64",
            "binary_version": "2.4.16-1ubuntu1.2"
          },
          {
            "binary_name": "libcupsimage2t64",
            "binary_version": "2.4.16-1ubuntu1.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "cups",
        "purl": "pkg:deb/ubuntu/cups@2.4.16-1ubuntu1.2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.16-1ubuntu1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.12-0ubuntu3",
        "2.4.12-0ubuntu5",
        "2.4.16-1ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "Ariel Silver discovered that CUPS incorrectly handled username comparisons\nduring authorization checks. A local attacker could possibly use this issue\nto gain unauthorized access to restricted operations. (CVE-2026-27447)\n\nAsim Viladi Oglu Manizada discovered that CUPS incorrectly handled\nnotify-recipient-uri values in the RSS notifier. A remote attacker could\npossibly use this issue to overwrite lp-writable files and cause a denial\nof service. (CVE-2026-34978)\n\nJacob Newman discovered that CUPS incorrectly handled filter option strings\nwhen processing job attributes. An attacker could use this issue to cause\nCUPS to crash, resulting in a denial of service, or possibly execute\narbitrary code. (CVE-2026-34979)\n\nAsim Viladi Oglu Manizada discovered that CUPS incorrectly handled\npage-border values in shared PostScript queues. A remote attacker could\npossibly use this issue to execute arbitrary code. (CVE-2026-34980)\n\nAsim Viladi Oglu Manizada discovered that CUPS incorrectly handled\nlocalhost authentication to attacker-controlled IPP services. A local\nattacker could possibly use this issue to overwrite arbitrary files\nand execute arbitrary code. (CVE-2026-34990)\n\nTomer Fichman discovered that CUPS incorrectly handled negative\njob-password-supported values. A local attacker could possibly use this\nissue to cause CUPS to crash, resulting in a denial of service.\n(CVE-2026-39314)\n\nTomer Fichman discovered that CUPS incorrectly handled temporary printer\ndeletion. An attacker could possibly use this issue to cause CUPS to crash,\nresulting in a denial of service, or to execute arbitrary code.\n(CVE-2026-39316)\n\nTomer Fichman discovered that CUPS incorrectly handled certain malformed\nSNMP responses. An attacker could possibly use this issue to obtain\nsensitive information. (CVE-2026-41079)",
  "id": "USN-8405-1",
  "modified": "2026-06-08T15:51:32Z",
  "published": "2026-06-08T15:51:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8405-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-27447"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-34978"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-34979"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-34980"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-34990"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-39314"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-39316"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-41079"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "cups vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-27447",
    "UBUNTU-CVE-2026-34978",
    "UBUNTU-CVE-2026-34979",
    "UBUNTU-CVE-2026-34980",
    "UBUNTU-CVE-2026-34990",
    "UBUNTU-CVE-2026-39314",
    "UBUNTU-CVE-2026-39316",
    "UBUNTU-CVE-2026-41079"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

ubuntu-cve-2026-34978

Vulnerability from osv_ubuntu

CVE-2026-34978 (GCVE-0-2026-34978)

usn-8405-1

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature

Related by attack behaviour