CVE-2026-56664 json
ZITADEL: Missing Token Lifecyle Validation (`exp` and `iat`) in JWT IdP Provider
published 2026-06-18 4 mo ago modified 2026-07-18 3 mo ago also EUVD-2026-42962 , GHSA-wxg7-w2v3-w38g , GO-2026-5732
- cvss
- 4.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 24%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go github.com/zitadel/zitadel 1.80.0-v2.20.0.20260615122908-fad02c6d9f45
- zitadel zitadel 3.4.12, 4.15.2
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.32% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.2 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N |
| GitHub | 3.1 | 4.2 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/zitadel/zitadel | <1.80.0-v2.20.0.20260615122908-fad02c6d9f45 |
1.80.0-v2.20.0.20260615122908-fad02c6d9f45 |
Affected products
- zitadel zitadel
Classification
- Weakness
-
- CWE-613 DEPRECATED: Insufficient Session Expiration
References
-
github.com
/zitadel/zitadel/commit/4925fab849d39a88674485d937b79e54318b48a8
web
-
github.com
/zitadel/zitadel/commit/d1c3aa84af8fcb0f33910ada30b866f4afb551ac
web
-
github.com
/zitadel/zitadel/commit/fad02c6d9f4587956f830d4536c64a9a94baa7ac
web, patch
-
github.com
/zitadel/zitadel/security/advisories/GHSA-wxg7-w2v3-w38g
web, advisory
-
github.com
/zitadel/zitadel/releases/tag/v3.4.12
web
-
github.com
/zitadel/zitadel/releases/tag/v4.15.2
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-56664
advisory
-
github.com
/zitadel/zitadel
package
Sources
- CVE List CVE-2026-56664
- GitHub Advisory GHSA-wxg7-w2v3-w38g
- NVD CVE-2026-56664
- OSV GO-2026-5732
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.