CVE-2026-126952

CVSS 9.2 (critical) · published 2026-11-13

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.

Weakness: CWE-347

Source: NVD CVE-2026-126952

References

• https://github.com/diced/zipline/security/advisories/GHSA-8g3f-425r-35rq
• https://www.vulncheck.com/advisories/zipline-through-4.4.0-webauthn-authentication-bypass-via-passkey-login
• https://github.com/diced/zipline/security/advisories/GHSA-8g3f-425r-35rq

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