{"id":"GO-2026-6737","summary":"Vikunja: CalDAV and feeds BasicAuth endpoints have no rate limit, bypassing the anti-brute-force floor on account passwords in code.vikunja.io/api","details":"Vikunja: CalDAV and feeds BasicAuth endpoints have no rate limit, bypassing the anti-brute-force floor on account passwords in code.vikunja.io/api.\n\nNOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.\n\n(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)\n\nThe additional affected modules and versions are: code.vikunja.io/api before v2.6.0.","aliases":["CVE-2026-91973","GHSA-m469-88xx-8rx2"],"modified":"2026-10-19T21:31:35.964761967Z","published":"2026-10-19T21:08:26Z","database_specific":{"review_status":"UNREVIEWED","url":"https://pkg.go.dev/vuln/GO-2026-6737"},"references":[{"type":"ADVISORY","url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-m469-88xx-8rx2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91973"},{"type":"WEB","url":"https://github.com/go-vikunja/vikunja/pull/3688"},{"type":"WEB","url":"https://github.com/go-vikunja/vikunja/releases/tag/v2.6.0"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/vikunja-before-2.6.0-authentication-bypass-via-caldav-basicauth"}],"affected":[{"package":{"name":"code.vikunja.io/api","ecosystem":"Go","purl":"pkg:golang/code.vikunja.io/api"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"ecosystem_specific":{"custom_ranges":[{"events":[{"introduced":"0"},{"fixed":"2.6.0"}],"type":"ECOSYSTEM"}]},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-6737.json"}}],"schema_version":"1.9.0"}