HIGHCVSS 8.10% EPSS
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 2026-11-13 · last modified 2026-11-13
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