{"id":"CVE-2026-126952","aliases":["GHSA-8g3f-425r-35rq"],"url":"https://o3.security/vulnerability/CVE-2026-126952","summary":"Zipline through 4.4.0 WebAuthn Authentication Bypass via Passkey Login","details":"Zipline through 4.4.0 contains an authentication bypass vulnerability in the WebAuthn login endpoint that creates sessions for a supplied registered credential ID without verifying the assertion. Attackers who obtain a target's passkey credential ID can impersonate that account without its authenticator, potentially gaining administrative control over SUPERADMIN accounts.","published":"2026-11-13T09:34:30.285Z","modified":"2026-11-14T10:30:17.634550427Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126952.json"},{"type":"ADVISORY","url":"https://github.com/diced/zipline/security/advisories/GHSA-8g3f-425r-35rq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126952"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/zipline-through-4.4.0-webauthn-authentication-bypass-via-passkey-login"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-11-14T10:30:17.634550427Z"}}