CVE-2026-35594
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| go-vikunja | vikunja | < 2.3.0 | affected |
Weaknesses
- CWE-613: CWE-613: Insufficient Session Expiration
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: yes
- Technical Impact: partial
Additional References
References
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-96q5-xm3p-7m84
- https://github.com/go-vikunja/vikunja/pull/2581
- https://github.com/go-vikunja/vikunja/commit/379d8a5c19334ffe4846003f590e202c31a75479
- https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0
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