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.
Metrics
Affected Vendors & Products
References
History
Fri, 24 Apr 2026 15:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Vikunja
Vikunja vikunja |
|
| CPEs | cpe:2.3:a:vikunja:vikunja:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Vikunja
Vikunja vikunja |
Tue, 14 Apr 2026 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 13 Apr 2026 13:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Go-vikunja
Go-vikunja vikunja |
|
| Vendors & Products |
Go-vikunja
Go-vikunja vikunja |
Fri, 10 Apr 2026 16:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Vikunja Link Share JWT tokens remain valid for 72 hours after share deletion or permission downgrade | |
| Weaknesses | CWE-613 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-04-10T15:55:04.929Z
Updated: 2026-04-14T14:32:15.339Z
Reserved: 2026-04-03T21:25:12.161Z
Link: CVE-2026-35594
Updated: 2026-04-14T14:32:05.418Z
Status : Analyzed
Published: 2026-04-10T16:16:32.000
Modified: 2026-04-24T14:53:24.230
Link: CVE-2026-35594
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