Medium severity6.5NVD Advisory· Published Apr 10, 2026· Updated Apr 24, 2026
CVE-2026-35594
CVE-2026-35594
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
code.vikunja.io/apiGo | < 2.3.0 | 2.3.0 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/go-vikunja/vikunja/commit/379d8a5c19334ffe4846003f590e202c31a75479nvdPatchWEB
- github.com/go-vikunja/vikunja/security/advisories/GHSA-96q5-xm3p-7m84nvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-96q5-xm3p-7m84ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-35594ghsaADVISORY
- github.com/go-vikunja/vikunja/pull/2581nvdIssue TrackingWEB
- github.com/go-vikunja/vikunja/releases/tag/v2.3.0nvdRelease NotesWEB
News mentions
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