HIGH 8.7 NVD
CVE-2026-91972
Vikunja versions before 2.6.0 fail to apply rate limiting to /api/v2 public authentication endpoints including login, register, password-reset, and OAuth token
Vikunja versions before 2.6.0 fail to apply rate limiting to /api/v2 public authentication endpoints including login, register, password-reset, and OAuth token routes. Remote unauthenticated attackers can perform unbounded credential guessing, account enumeration, and password-reset flooding attacks without throttling restrictions.
References
- https://github.com/go-vikunja/vikunja/security/advisories/GHSA-6rvj-qwjf-3m4q
- https://www.vulncheck.com/advisories/vikunja-before-2.6.0-authentication-bypass-via-unthro
This high severity vulnerability with a CVSS score of 8.7 was published on 2026-09-15 via NVD.
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