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 · last modified .
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
EPSS: 0.002 (14.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
Weakness classification (CWE)
References
- github.com/go-vikunja/vikunja/security/advisories/GHSA-4qvp-948j-4cgv (vendor-advisory)
- www.vulncheck.com/advisories/vikunja-before-2.7.1-insufficient-session-expirati… (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.