{"id":"GHSA-m4vj-wr5q-cmvr","title":"Duplicate Advisory: Vikunja: Every /api/v2 pre-auth endpoint is unthrottled on a stock install while its /api/v1 twin is rate limited","summary":"Duplicate Advisory: Vikunja: Every /api/v2 pre-auth endpoint is unthrottled on a stock install while its /api/v1 twin is rate limited","severity":"high","cvss":7.5,"cwe":["CWE-307"],"vendor":"go-vikunja","product":"github.com/go-vikunja/vikunja","ecosystem":"go","affected":["github.com/go-vikunja/vikunja <= 2.5.0"],"published":"2026-09-15","updated":"2026-10-09","sourceUpdated":"2026-10-09T20:51:00Z","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-m4vj-wr5q-cmvr","references":[{"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-6rvj-qwjf-3m4q"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91972"},{"url":"https://www.vulncheck.com/advisories/vikunja-before-2.6.0-authentication-bypass-via-unthrottled-api"},{"url":"https://github.com/advisories/GHSA-m4vj-wr5q-cmvr"}],"tags":["ghsa","go"],"ingestedAt":"2026-10-09T21:12:42.332Z","slug":"GHSA-m4vj-wr5q-cmvr","body":"## Overview\n\n### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-6rvj-qwjf-3m4q. This link is maintained to preserve external references.\n\n### Original Description\nVikunja 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.\n\n## Affected packages\n\n- `github.com/go-vikunja/vikunja <= 2.5.0`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}