CVE-2026-111920

Vikunja 2.6.0 contains a broken access control flaw in getProjectAccessForUser (pkg/models/project_access.go), which resolves a user's effective project permission as the maximum over the project tree, silently overriding explicit lower-permission shares on sub-projects. A collaborator with write access on a parent project but read-only access to a child project can modify the child project's tasks and content.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-pjr3-86v4-5p7w
https://www.vulncheck.com/advisories/vikunja-2.6.0-broken-access-control-via-inherited-project-permissions
https://github.com/go-vikunja/vikunja/security/advisories/GHSA-pjr3-86v4-5p7w

Configurations

No configuration.

History

18 Oct 2026, 12:17

Type	Values Removed	Values Added
References	~~() https://github.com/go-vikunja/vikunja/security/advisories/GHSA-pjr3-86v4-5p7w -~~	() https://github.com/go-vikunja/vikunja/security/advisories/GHSA-pjr3-86v4-5p7w -

17 Oct 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-17 19:16

Updated : 2026-10-19 21:02

NVD link : CVE-2026-111920

Mitre link : CVE-2026-111920

CVE.ORG link : CVE-2026-111920

JSON object : View

Products Affected

No product.

CWE

CWE-269

Improper Privilege Management

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