Vulnerability Description
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, Vikunja's link share authentication (GetLinkShareFromClaims in pkg/models/link_sharing.go) constructs authorization objects entirely from JWT claims without any server-side database validation. When a project owner deletes a link share or downgrades its permissions, all previously issued JWTs continue to grant the original permission level for up to 72 hours (the default service.jwtttl). This vulnerability is fixed in 2.3.0.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vikunja | Vikunja | < 2.3.0 |
Related Weaknesses (CWE)
References
- https://github.com/go-vikunja/vikunja/commit/379d8a5c19334ffe4846003f590e202c31aPatch
- https://github.com/go-vikunja/vikunja/pull/2581Issue Tracking
- https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0Release Notes
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-96q5-xm3p-7m84ExploitVendor Advisory
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-96q5-xm3p-7m84ExploitVendor Advisory
FAQ
What is CVE-2026-35594?
CVE-2026-35594 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, Vikunja's link share authentication (GetLinkShareFromClaims in pkg/models/link_sharing.go) constructs authorization obje...
How severe is CVE-2026-35594?
CVE-2026-35594 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-35594?
Check the references section above for vendor advisories and patch information. Affected products include: Vikunja Vikunja.