CVE-2026-111917

MEDIUM 6.5

Vikunja 2.3.0 before 2.7.0 WebSocket Authentication Ignores Session Revocation

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-613
Vendor	go-vikunja
Product	vikunja
Published	Oct 17, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

go-vikunja / vikunja

2.3.0 < 2.7.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

🔍 Tan-JunWei