CVE-2025-64103
Description
Starting from 2.53.6, 2.54.3, and 2.55.0, Zitadel only required multi factor authentication in case the login policy has either enabled requireMFA or requireMFAForLocalUsers. If a user has set up MFA without this requirement, Zitadel would consider single factor auhtenticated sessions as valid as well and not require multiple factors. Bypassing second authentication factors weakens multifactor authentication and enables attackers to bypass the more secure factor. An attacker can target the TOTP code alone, only six digits, bypassing password verification entirely and potentially compromising accounts with 2FA enabled. This vulnerability is fixed in 4.6.0, 3.4.3, and 2.71.18.
How to fix
- zitadel zitadel2.71.18, 3.4.3, 4.6.0 or later
- github.com/zitadel/zitadel/v22.71.18 or later
- github.com/zitadel/zitadel1.80.0-v2.20.0.20251029091250-b284f8474eed or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| zitadel zitadel | 2.53.6 ≤ v ≤ 2.53.9, 2.54.3 ≤ v ≤ 2.54.10, 2.55.0 ≤ v < 2.71.18, 3.0.0 ≤ v < 3.4.3, 4.0.0 ≤ v < 4.6.0 | 2.71.18, 3.4.3, 4.6.0 |
| github.com/zitadel/zitadel/v2Go | 2.53.6 ≤ v ≤ 2.53.9, 2.54.3 ≤ v ≤ 2.54.10, 2.55.0 ≤ v < 2.71.18 | 2.71.18 |
| github.com/zitadel/zitadelGo | v < 1.80.0-v2.20.0.20251029091250-b284f8474eed, No range specified | 1.80.0-v2.20.0.20251029091250-b284f8474eed |
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