{"id":"GO-2026-6558","summary":"Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle","details":"Traefik: BasicAuth singleflight coalescing reintroduces an unauthenticated username-enumeration timing oracle.\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: github.com/traefik/traefik from v3.6.11 before v3.7.13.","aliases":["CVE-2026-88010","GHSA-8fcf-v89g-xpg6"],"modified":"2026-10-01T20:45:13.180305525Z","published":"2026-10-01T20:23:38Z","database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-6558","review_status":"UNREVIEWED"},"references":[{"type":"ADVISORY","url":"https://github.com/traefik/traefik/security/advisories/GHSA-8fcf-v89g-xpg6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88010"},{"type":"WEB","url":"https://github.com/traefik/traefik/commit/ddc1bf4660b85fd61fafdd821eb8216fb1a0b130"},{"type":"WEB","url":"https://github.com/traefik/traefik/pull/13816"},{"type":"WEB","url":"https://github.com/traefik/traefik/releases/tag/v3.7.13"}],"affected":[{"package":{"name":"github.com/traefik/traefik","ecosystem":"Go","purl":"pkg:golang/github.com/traefik/traefik"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"ecosystem_specific":{"custom_ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.6.11"},{"fixed":"3.7.13"}]}]},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-6558.json"}}],"schema_version":"1.9.0"}