CVE-2026-111920

CVSS 5.3 (medium) · published 2026-10-17

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.

Weakness: CWE-269

Source: NVD CVE-2026-111920

References

• 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

Check your software

Connect an AI agent to the FixLane MCP server or ask the Telegram bot to check what you have installed against incidents with a verified fixed version.