What’s Vulnerable › Vulnerabilities

CVE-2026-56664: ZITADEL: Missing Token Lifecyle Validation (`exp` and `iat`) in JWT IdP Provider

• Severity: medium (CVSS 4.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-10 · updated 2026-07-10
• Weakness: CWE-613

Description

ZITADEL is an open source identity management platform. Prior to 3.4.12 and 4.15.2, ZITADEL's external JWT Identity Provider validation in internal/idp/providers/jwt/session.go skips the maximum token age freshness check when an incoming token omits the iat claim, allowing arbitrarily old tokens from a trusted issuer to pass authentication. This issue is fixed in versions 3.4.12 and 4.15.2.

Affected products

• zitadel: from 4.0.0-rc.1, < 4.15.2; before 3.4.12

References

• https://github.com/zitadel/zitadel/commit/4925fab849d39a88674485d937b79e54318b48a8
• https://github.com/zitadel/zitadel/commit/d1c3aa84af8fcb0f33910ada30b866f4afb551ac
• https://github.com/zitadel/zitadel/releases/tag/v3.4.12
• https://github.com/zitadel/zitadel/releases/tag/v4.15.2
• https://github.com/zitadel/zitadel/security/advisories/GHSA-wxg7-w2v3-w38g

Get alerted when CVE-2026-56664 or the next vulnerability affects your stack