ubuntu-cve-2026-47084
Vulnerability from osv_ubuntu
Published
2026-07-17 00:00
Modified
2026-07-17 00:00
Summary
Details

An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. The LOCALDELETE command bypassed ACL checks. An authenticated but non-admin user could invoke the admin-only LOCALDELETE IMAP command and delete mailboxes for which they had no permissions.

Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cyrus-admin",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
          },
          {
            "binary_name": "cyrus-caldav",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
          },
          {
            "binary_name": "cyrus-clients",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
          },
          {
            "binary_name": "cyrus-common",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
          },
          {
            "binary_name": "cyrus-imapd",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
          },
          {
            "binary_name": "cyrus-murder",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
          },
          {
            "binary_name": "cyrus-nntpd",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
          },
          {
            "binary_name": "cyrus-pop3d",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
          },
          {
            "binary_name": "cyrus-replication",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
          },
          {
            "binary_name": "libcyrus-imap-perl",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "cyrus-imapd",
        "purl": "pkg:deb/ubuntu/cyrus-imapd@2.5.10-3ubuntu1.1+esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.5.10-3build1",
        "2.5.10-3build2",
        "2.5.10-3ubuntu1",
        "2.5.10-3ubuntu1.1",
        "2.5.10-3ubuntu1.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cyrus-admin",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
          },
          {
            "binary_name": "cyrus-caldav",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
          },
          {
            "binary_name": "cyrus-clients",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
          },
          {
            "binary_name": "cyrus-common",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
          },
          {
            "binary_name": "cyrus-imapd",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
          },
          {
            "binary_name": "cyrus-murder",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
          },
          {
            "binary_name": "cyrus-nntpd",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
          },
          {
            "binary_name": "cyrus-pop3d",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
          },
          {
            "binary_name": "cyrus-replication",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
          },
          {
            "binary_name": "libcyrus-imap-perl",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "cyrus-imapd",
        "purl": "pkg:deb/ubuntu/cyrus-imapd@3.0.13-5ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.11-1",
        "3.0.11-1build1",
        "3.0.12-1",
        "3.0.12-2",
        "3.0.12-2ubuntu2",
        "3.0.12-2ubuntu3",
        "3.0.13-2ubuntu1",
        "3.0.13-3ubuntu1",
        "3.0.13-4ubuntu1",
        "3.0.13-5",
        "3.0.13-5ubuntu0.1~esm1",
        "3.0.13-5ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cyrus-admin",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
          },
          {
            "binary_name": "cyrus-caldav",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
          },
          {
            "binary_name": "cyrus-clients",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
          },
          {
            "binary_name": "cyrus-common",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
          },
          {
            "binary_name": "cyrus-imapd",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
          },
          {
            "binary_name": "cyrus-murder",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
          },
          {
            "binary_name": "cyrus-nntpd",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
          },
          {
            "binary_name": "cyrus-pop3d",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
          },
          {
            "binary_name": "cyrus-replication",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
          },
          {
            "binary_name": "libcyrus-imap-perl",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "cyrus-imapd",
        "purl": "pkg:deb/ubuntu/cyrus-imapd@3.4.3-3ubuntu0.3+esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.2.6-2build1",
        "3.4.2-2",
        "3.4.2-2build1",
        "3.4.3-2",
        "3.4.3-3",
        "3.4.3-3build2",
        "3.4.3-3ubuntu0.1",
        "3.4.3-3ubuntu0.1+esm1",
        "3.4.3-3ubuntu0.3",
        "3.4.3-3ubuntu0.3+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cyrus-admin",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
          },
          {
            "binary_name": "cyrus-caldav",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
          },
          {
            "binary_name": "cyrus-clients",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
          },
          {
            "binary_name": "cyrus-common",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
          },
          {
            "binary_name": "cyrus-imapd",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
          },
          {
            "binary_name": "cyrus-murder",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
          },
          {
            "binary_name": "cyrus-nntpd",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
          },
          {
            "binary_name": "cyrus-pop3d",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
          },
          {
            "binary_name": "cyrus-replication",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
          },
          {
            "binary_name": "libcyrus-imap-perl",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "cyrus-imapd",
        "purl": "pkg:deb/ubuntu/cyrus-imapd@3.8.2-1ubuntu0.2+esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.8.0-5",
        "3.8.1-1",
        "3.8.1-1build1",
        "3.8.1-1build2",
        "3.8.1-3",
        "3.8.1-3build3",
        "3.8.2-1",
        "3.8.2-1ubuntu0.1~esm1",
        "3.8.2-1ubuntu0.2",
        "3.8.2-1ubuntu0.2+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cyrus-admin",
            "binary_version": "3.12.1-3"
          },
          {
            "binary_name": "cyrus-caldav",
            "binary_version": "3.12.1-3"
          },
          {
            "binary_name": "cyrus-clients",
            "binary_version": "3.12.1-3"
          },
          {
            "binary_name": "cyrus-common",
            "binary_version": "3.12.1-3"
          },
          {
            "binary_name": "cyrus-imapd",
            "binary_version": "3.12.1-3"
          },
          {
            "binary_name": "cyrus-murder",
            "binary_version": "3.12.1-3"
          },
          {
            "binary_name": "cyrus-nntpd",
            "binary_version": "3.12.1-3"
          },
          {
            "binary_name": "cyrus-pop3d",
            "binary_version": "3.12.1-3"
          },
          {
            "binary_name": "cyrus-replication",
            "binary_version": "3.12.1-3"
          },
          {
            "binary_name": "libcyrus-imap-perl",
            "binary_version": "3.12.1-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "cyrus-imapd",
        "purl": "pkg:deb/ubuntu/cyrus-imapd@3.12.1-3?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.10.2-1",
        "3.12.1-2",
        "3.12.1-2build1",
        "3.12.1-3"
      ]
    }
  ],
  "aliases": [],
  "details": "An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. The LOCALDELETE command bypassed ACL checks. An authenticated but non-admin user could invoke the admin-only LOCALDELETE IMAP command and delete mailboxes for which they had no permissions.",
  "id": "UBUNTU-CVE-2026-47084",
  "modified": "2026-07-17T00:00:00Z",
  "published": "2026-07-17T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-47084"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-47084"
    },
    {
      "type": "REPORT",
      "url": "https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.3.html"
    },
    {
      "type": "REPORT",
      "url": "https://www.cyrusimap.org/imap/download/release-notes/index.html"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-47084"
  ]
}



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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.