CVE-2026-111917: Insufficient Session Expiration in go-vikunja vikunja
Description
Vikunja versions 2.3.0 up to but not including 2.7.0 have a session validation vulnerability where WebSocket access remains active after session revocation. This occurs because the handleAuth function does not verify the JWT sid claim against the sessions table. An attacker with a stolen access token can maintain or open WebSocket connections to /api/v2/ws even after the session is deleted or TOTP enrollment is performed, allowing continued receipt of notifications including comments, tasks, and project content.
CVSS v4.0
Score 7.1high
Affected software
go-vikunja
vikunja
pkg:golang/github.com/go-vikunja/vikunjaRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-111917 describes an insufficient session expiration vulnerability in Vikunja versions >=2.3.0 and <2.7.0. The flaw lies in the handleAuth function, which fails to check the JWT sid claim against the sessions table, enabling attackers holding stolen access tokens to keep WebSocket connections alive after session revocation events such as session deletion or TOTP enrollment. This allows attackers to continue receiving victim notifications related to comments, tasks, and project content via the /api/v2/ws endpoint.
Potential Impact
Attackers with stolen access tokens can maintain unauthorized WebSocket connections after legitimate session revocation, potentially exposing victim notification data including comments, tasks, and project content. This undermines session termination controls and may lead to unauthorized data exposure.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-17T12:18:55.462Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ad3c6d22cdf04f656520815
Added to database: 10/17/2026, 19:04:50 UTC
Last enriched: 10/17/2026, 19:18:28 UTC
Last updated: 10/17/2026, 19:19:31 UTC
Views: 6
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