Vulnerability-Lookup

ubuntu-cve-2026-41526

Vulnerability from osv_ubuntu

Published

2026-04-28 08:16

Modified

2026-05-20 15:27

Summary

Details

In KDE KCoreAddons before 6.25, KShell::quoteArgs is intended to safely quote arguments so that they can be passed to a shell command. This parsing does not adequately handle metacharacters, leading to an escape from the shell. All applications relying on this method in a security-critical path to handle user input are affected and could be exploited. In particular, because sendInput() sends a string to a terminal, a control character such as \x01 can be used during injection.

Severity

6.5 (Medium)


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

7.8 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-41526	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-41526	REPORT
	https://kde.org/info/security/advisory-20260427-1.txt	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libkf5coreaddons-data",
            "binary_version": "5.18.0-0ubuntu1.1"
          },
          {
            "binary_name": "libkf5coreaddons5",
            "binary_version": "5.18.0-0ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "kcoreaddons",
        "purl": "pkg:deb/ubuntu/kcoreaddons@5.18.0-0ubuntu1.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.15.0-0ubuntu1",
        "5.15.0-0ubuntu2",
        "5.18.0-0ubuntu1",
        "5.18.0-0ubuntu1.1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libkf5coreaddons-data",
            "binary_version": "5.44.0a-0ubuntu1"
          },
          {
            "binary_name": "libkf5coreaddons-dev-bin",
            "binary_version": "5.44.0a-0ubuntu1"
          },
          {
            "binary_name": "libkf5coreaddons5",
            "binary_version": "5.44.0a-0ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "kcoreaddons",
        "purl": "pkg:deb/ubuntu/kcoreaddons@5.44.0a-0ubuntu1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.38.0-0ubuntu1",
        "5.40.0-0ubuntu1",
        "5.41.0-0ubuntu1",
        "5.42.0-0ubuntu1",
        "5.43.0-0ubuntu2",
        "5.44.0a-0ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libkf5coreaddons-data",
            "binary_version": "5.68.0-0ubuntu1"
          },
          {
            "binary_name": "libkf5coreaddons-dev-bin",
            "binary_version": "5.68.0-0ubuntu1"
          },
          {
            "binary_name": "libkf5coreaddons5",
            "binary_version": "5.68.0-0ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "kcoreaddons",
        "purl": "pkg:deb/ubuntu/kcoreaddons@5.68.0-0ubuntu1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.62.0-0ubuntu1",
        "5.62.0-0ubuntu2",
        "5.64.0-0ubuntu1",
        "5.65.0-0ubuntu1",
        "5.66.0-0ubuntu1",
        "5.67.0-0ubuntu1",
        "5.68.0-0ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libkf5coreaddons-data",
            "binary_version": "5.92.0-0ubuntu1"
          },
          {
            "binary_name": "libkf5coreaddons-dev-bin",
            "binary_version": "5.92.0-0ubuntu1"
          },
          {
            "binary_name": "libkf5coreaddons5",
            "binary_version": "5.92.0-0ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "kcoreaddons",
        "purl": "pkg:deb/ubuntu/kcoreaddons@5.92.0-0ubuntu1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.86.0-0ubuntu1",
        "5.87.0-0ubuntu1",
        "5.88.0-0ubuntu2",
        "5.88.0-0ubuntu3",
        "5.88.0-1ubuntu1",
        "5.88.0-1ubuntu2",
        "5.89.0-0ubuntu1",
        "5.90.0-0ubuntu1",
        "5.91.0-0ubuntu1",
        "5.92.0-0ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libkf5coreaddons-data",
            "binary_version": "5.115.0-0ubuntu5"
          },
          {
            "binary_name": "libkf5coreaddons-dev-bin",
            "binary_version": "5.115.0-0ubuntu5"
          },
          {
            "binary_name": "libkf5coreaddons5",
            "binary_version": "5.115.0-0ubuntu5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "kcoreaddons",
        "purl": "pkg:deb/ubuntu/kcoreaddons@5.115.0-0ubuntu5?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.110.0-0ubuntu1",
        "5.112.0-0ubuntu1",
        "5.113.0-0ubuntu1",
        "5.113.0-0ubuntu2",
        "5.115.0-0ubuntu1",
        "5.115.0-0ubuntu3",
        "5.115.0-0ubuntu4",
        "5.115.0-0ubuntu5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libkf5coreaddons-data",
            "binary_version": "5.116.0-1ubuntu1"
          },
          {
            "binary_name": "libkf5coreaddons-dev-bin",
            "binary_version": "5.116.0-1ubuntu1"
          },
          {
            "binary_name": "libkf5coreaddons5",
            "binary_version": "5.116.0-1ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "kcoreaddons",
        "purl": "pkg:deb/ubuntu/kcoreaddons@5.116.0-1ubuntu1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.116.0-0ubuntu1",
        "5.116.0-1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libkf6coreaddons-data",
            "binary_version": "6.17.0-0ubuntu1"
          },
          {
            "binary_name": "libkf6coreaddons6",
            "binary_version": "6.17.0-0ubuntu1"
          },
          {
            "binary_name": "qml6-module-org-kde-coreaddons",
            "binary_version": "6.17.0-0ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "kf6-kcoreaddons",
        "purl": "pkg:deb/ubuntu/kf6-kcoreaddons@6.17.0-0ubuntu1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.12.0-0ubuntu1",
        "6.12.0-0ubuntu2",
        "6.14.0-0ubuntu1",
        "6.15.0-0ubuntu1",
        "6.16.0-0ubuntu1",
        "6.17.0-0ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libkf5coreaddons-data",
            "binary_version": "5.116.0-1ubuntu1"
          },
          {
            "binary_name": "libkf5coreaddons-dev-bin",
            "binary_version": "5.116.0-1ubuntu1"
          },
          {
            "binary_name": "libkf5coreaddons5",
            "binary_version": "5.116.0-1ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "kcoreaddons",
        "purl": "pkg:deb/ubuntu/kcoreaddons@5.116.0-1ubuntu1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.116.0-1ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libkf6coreaddons-data",
            "binary_version": "6.24.0-0ubuntu1"
          },
          {
            "binary_name": "libkf6coreaddons6",
            "binary_version": "6.24.0-0ubuntu1"
          },
          {
            "binary_name": "qml6-module-org-kde-coreaddons",
            "binary_version": "6.24.0-0ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "kf6-kcoreaddons",
        "purl": "pkg:deb/ubuntu/kf6-kcoreaddons@6.24.0-0ubuntu1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "6.17.0-0ubuntu1",
        "6.19.0-0ubuntu1",
        "6.20.0-0ubuntu1",
        "6.21.0-0ubuntu1",
        "6.22.0-0ubuntu1",
        "6.23.0-0ubuntu1",
        "6.24.0-0ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "In KDE KCoreAddons before 6.25, KShell::quoteArgs is intended to safely quote arguments so that they can be passed to a shell command. This parsing does not adequately handle metacharacters, leading to an escape from the shell. All applications relying on this method in a security-critical path to handle user input are affected and could be exploited. In particular, because sendInput() sends a string to a terminal, a control character such as \\x01 can be used during injection.",
  "id": "UBUNTU-CVE-2026-41526",
  "modified": "2026-05-20T15:27:27Z",
  "published": "2026-04-28T08:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-41526"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-41526"
    },
    {
      "type": "REPORT",
      "url": "https://kde.org/info/security/advisory-20260427-1.txt"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-41526"
  ]
}

CVE-2026-41526 (GCVE-0-2026-41526)

Vulnerability from cvelistv5 – Published: 2026-04-28 00:00 – Updated: 2026-04-28 13:07

Summary

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-150 - Improper Neutralization of Escape, Meta, or Control Sequences

Assigner

mitre

References

5 references

URL	Tags
https://invent.kde.org/frameworks/kcoreaddons/
https://github.com/KDE/kcoreaddons/blob/50d360736…
https://github.com/KDE/kcoreaddons/blob/50d360736…
https://github.com/KDE/kcoreaddons/releases/tag/v6.25.0
https://kde.org/info/security/advisory-20260427-1.txt

Impacted products

1 product

Vendor	Product	Version
KDE	KCoreAddons	Affected: 0 , < 6.25 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-41526",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-28T13:00:44.980535Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-28T13:07:56.176Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "KCoreAddons",
          "vendor": "KDE",
          "versions": [
            {
              "lessThan": "6.25",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In KDE KCoreAddons before 6.25, KShell::quoteArgs is intended to safely quote arguments so that they can be passed to a shell command. This parsing does not adequately handle metacharacters, leading to an escape from the shell. All applications relying on this method in a security-critical path to handle user input are affected and could be exploited. In particular, because sendInput() sends a string to a terminal, a control character such as \\x01 can be used during injection."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
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              "description": "CWE-150 Improper Neutralization of Escape, Meta, or Control Sequences",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-28T06:52:22.174Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://invent.kde.org/frameworks/kcoreaddons/"
        },
        {
          "url": "https://github.com/KDE/kcoreaddons/blob/50d360736c399502fedf203e95482b0d0e5a3ea2/src/lib/util/kshell.h#L43-L49"
        },
        {
          "url": "https://github.com/KDE/kcoreaddons/blob/50d360736c399502fedf203e95482b0d0e5a3ea2/src/lib/util/kshell.h#L168"
        },
        {
          "url": "https://github.com/KDE/kcoreaddons/releases/tag/v6.25.0"
        },
        {
          "url": "https://kde.org/info/security/advisory-20260427-1.txt"
        }
      ],
      "x_generator": {
        "engine": "enrichogram 0.0.1"
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  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-41526",
    "datePublished": "2026-04-28T00:00:00.000Z",
    "dateReserved": "2026-04-20T00:00:00.000Z",
    "dateUpdated": "2026-04-28T13:07:56.176Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

ubuntu-cve-2026-41526

Vulnerability from osv_ubuntu

CVE-2026-41526 (GCVE-0-2026-41526)

Tags

Sightings

Nomenclature