CVE-2026-35594
MEDIUM EPSS 18.3%
Published Apr 10, 20262mo ago · Modified Jun 17, 20262w ago
6.5 CVSS 3.1
Published Apr 10, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago
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 Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
18.3% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available
Weaknesses 1
CWE-613
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| vikunja | vikunja | * | <2.3.0 |
References 4
- github.com https://github.com/go-vikunja/vikunja/commit/379d8a5c19334ffe4846003f590e202c31a75479
- github.com https://github.com/go-vikunja/vikunja/pull/2581
- github.com https://github.com/go-vikunja/vikunja/releases/tag/v2.3.0
- github.com https://github.com/go-vikunja/vikunja/security/advisories/GHSA-96q5-xm3p-7m84
Remediation
- github.com https://github.com/go-vikunja/vikunja/commit/379d8a5c19334ffe4846003f590e202c31a75479