What’s Vulnerable › Vulnerabilities

CVE-2023-47111: ZITADEL race condition in lockout policy execution

• Severity: low (CVSS 3.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-11-08 · updated 2026-06-17
• Weakness: CWE-362

Description

ZITADEL provides identity infrastructure. ZITADEL provides administrators the possibility to define a `Lockout Policy` with a maximum amount of failed password check attempts. On every failed password check, the amount of failed checks is compared against the configured maximum. Exceeding the limit, will lock the user and prevent further authentication. In the affected implementation it was possible for an attacker to start multiple parallel password checks, giving him the possibility to try out more combinations than configured in the `Lockout Policy`. This vulnerability has been patched in versions 2.40.5 and 2.38.3.

Affected products

• zitadel: before 2.38.3; from 2.39.0 before 2.40.5 — fixed in 2.38.3, 2.40.5

How to fix

Upgrade to a fixed version: zitadel 2.38.3, 2.40.5. Check the vendor advisory for mitigations.

References

• https://github.com/zitadel/zitadel/commit/22e2d5599918864877e054ebe82fb834a5aa1077
• https://github.com/zitadel/zitadel/releases/tag/v2.38.3
• https://github.com/zitadel/zitadel/releases/tag/v2.40.5
• https://github.com/zitadel/zitadel/security/advisories/GHSA-7h8m-vrxx-vr4m
• https://github.com/zitadel/zitadel/commit/22e2d5599918864877e054ebe82fb834a5aa1077
• https://github.com/zitadel/zitadel/releases/tag/v2.38.3
• https://github.com/zitadel/zitadel/releases/tag/v2.40.5
• https://github.com/zitadel/zitadel/security/advisories/GHSA-7h8m-vrxx-vr4m

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