CSRF in Go-Vikunja Vikunja
CVE-2026-123495
Vikunja 2.0.0 before 2.7.1 accepts form-encoded bodies on the /api/v2 login and OIDC callback endpoints without CSRF or Origin checks, enabling login cross-site request forgery. An attacker with an account can lure a victim to a page posting the attacker's credentials or OIDC code, switching the victim into the attacker's account and exposing data the victim then adds.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/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
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-frf4-3prf-3vch) (vendor-advisory)
- VulnCheck Advisory: Vikunja 2.0.0 before 2.7.1 Login CSRF via /api/v2 Login and OIDC Callback (third-party-advisory)
Frequently asked questions
- What is CVE-2026-123495?
- CVE-2026-123495 is a medium-severity vulnerability in Go-Vikunja Vikunja, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.6/10. Published 2026-11-08.
- How severe is CVE-2026-123495?
- Medium severity. CVSS v3 base score is 4.6 out of 10.