CVE-2026-111917

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.

CVSS 4.0

7.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-25)

CWE

CWE-613

Published

2026-10-17

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Packages (OSV)

References

• https://github.com/go-vikunja/vikunja/security/advisories/GHSA-4hv6-xc92-j86g
• https://www.vulncheck.com/advisories/vikunja-2.3.0-before-2.7.0-websocket-authentication-ignores-session-revocation
• https://github.com/go-vikunja/vikunja/security/advisories/GHSA-4hv6-xc92-j86g

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