What is CVE-2026-123528?

CVE-2026-123528 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Insufficient Session Expiration. CVSS score: 6.8/10. Published 2026-11-08.

How severe is CVE-2026-123528?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Vulnerability in Go-Vikunja Vikunja

CVE-2026-123528

Vikunja before 2.7.1 contains an insufficient session expiration vulnerability that allows holders of revoked access tokens to keep authenticating because SetupTokenMiddleware skips session and account-status checks. Attackers with a stolen token can, after logout, password reset, or account disabling, mint OAuth sessions via /oauth/authorize or tk_ API tokens for persistent access.

Published 2026-11-08 · last modified 2026-11-08.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Go-Vikunja Vikunja

Weakness classification (CWE)

CWE-613 — Insufficient Session Expiration

References

GitHub Security Advisory (GHSA-4qvp-948j-4cgv) (vendor-advisory)
VulnCheck Advisory: Vikunja before 2.7.1 Insufficient Session Expiration via HTTP Token Middleware (third-party-advisory)

Frequently asked questions

What is CVE-2026-123528?: CVE-2026-123528 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Insufficient Session Expiration. CVSS score: 6.8/10. Published 2026-11-08.
How severe is CVE-2026-123528?: Medium severity. CVSS v3 base score is 6.8 out of 10.