CVE-2025-64102 – Zitadel allows brute-forcing authentication factors

CVE ID : CVE-2025-64102

Published : Oct. 29, 2025, 6:36 p.m. | 48 minutes ago

Description : Zitadel is open-source identity infrastructure software. Prior to 4.6.0, 3.4.3, and 2.71.18, an attacker can perform an online brute-force attack on OTP, TOTP, and passwords. While Zitadel allows preventing online brute force attacks in scenarios like TOTP, Email OTP, or passwords using a lockout mechanism. The mechanism is not enabled by default and can cause a denial of service for the corresponding user if enabled. Additionally, the mitigation strategies were not fully implemented in the more recent resource-based APIs. This vulnerability is fixed in 4.6.0, 3.4.3, and 2.71.18.

Severity: 0.0 | NA

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