CVE-2026-111917GHSA-4hv6-xc92-j86gGO-2026-6715
Vikunja 2.3.0 before 2.7.0 WebSocket Authentication Ignores Session Revocation
go-vikunja vikunjaGoLibraries & packages
CVSS
7.1HighExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 19 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.28%Chance of exploitation activity in the next 30 days, higher than 19% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 2.7.0vikunjaCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
Vikunja 2.3.0 before 2.7.0 contains an improper session validation vulnerability that allows attackers to keep WebSocket access after revocation because handleAuth never checks the JWT sid claim against the sessions table. Attackers holding a stolen access token can open or maintain connections to /api/v2/ws after session deletion or TOTP enrollment, continuing to receive the victim's notification.created pushes, including comment, task and project content.
Text from CVE List
Affected versions 3
- vikunjaaffected: 2.3.0 before 2.7.0CVE List
- vikunjaunaffected: 2.7.0CVE List
- code.vikunja.io/api, Gofrom 2.3.0, through 2.6.0OSV