{"id":"CVE-2026-123495","title":"Vikunja 2.0.0 before 2.7.1 Login CSRF via /api/v2 Login and OIDC Callback","summary":"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 pos…","severity":"medium","cvss":4.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","cvssSource":"cna","cwe":["CWE-352"],"vendor":"go-vikunja","product":"vikunja","affected":["vikunja >= 2.0.0 < 2.7.1"],"published":"2026-11-08","updated":"2026-11-08","sourceUpdated":"2026-11-08T01:37:13.573Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-123495","references":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-frf4-3prf-3vch","label":"GitHub Security Advisory (GHSA-frf4-3prf-3vch)"},{"url":"https://www.vulncheck.com/advisories/vikunja-2.0.0-before-2.7.1-login-csrf-via-api-v2-login-and-oidc-callback","label":"VulnCheck Advisory: Vikunja 2.0.0 before 2.7.1 Login CSRF via /api/v2 Login and OIDC Callback"}],"tags":["cve.org"],"ingestedAt":"2026-11-08T02:43:18.707Z","slug":"CVE-2026-123495","body":"## Overview\n\nVikunja 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.\n\n## Affected\n\n- `vikunja >= 2.0.0 < 2.7.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":25,"depthScoreParts":{"impact":25.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}