CVE-2026-55669 json
ZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider
published 2026-06-18 4 mo ago modified 2026-07-10 3 mo ago also GHSA-g5h5-m4hm-xjrr , GO-2026-5391 , EUVD-2026-42958
- cvss
- 4.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 4%
- 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 validates a token's signature and issuer (iss) but not the audience (aud) claim, allowing a validly signed token from a trusted issuer for another relying party to be accepted by ZITADEL. This issue is fixed in versions 3.4.12 and 4.15.2.
Patch / fix
- go github.com/zitadel/zitadel 1.80.0-v2.20.0.20260615132747-d184e976fc79
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.15% chance of exploitation in the next 30 days, higher than 4% 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-v2.20.0.20260615132747-d184e976fc79 |
1.80.0-v2.20.0.20260615132747-d184e976fc79 |
Affected products
- zitadel zitadel
Classification
- Weakness
-
- CWE-346 Origin Validation Error
References
-
github.com
/zitadel/zitadel/commit/d184e976fc799a383bb6ef9f32c3bae11a3ef85f
web, patch
-
github.com
/zitadel/zitadel/security/advisories/GHSA-g5h5-m4hm-xjrr
web, advisory
-
github.com
/zitadel/zitadel/releases/tag/v3.4.12
web
-
github.com
/zitadel/zitadel/releases/tag/v4.15.2
web
-
github.com
/zitadel/zitadel
package
Sources
- CVE List CVE-2026-55669
- GitHub Advisory GHSA-g5h5-m4hm-xjrr
- NVD CVE-2026-55669
- OSV GO-2026-5391
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