CVE-2026-55669 | ZITADEL is an open source identity management platform. Prio… | CVSS 4.2 MEDIUM

Description

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.

Metadata

CVE ID: CVE-2026-55669
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-17 00:05 UTC
Published: 2026-07-10 16:58 UTC
Last updated: 2026-07-10 18:16 UTC
Primary CWE: CWE-346
CWE-346: Origin Validation Error
Vendor / Product: zitadel / zitadel
Sources: cve.org · NVD

Severity & Metrics

4.2 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
zitadel	zitadel	—	>= 4.0.0-rc.1, < 4.15.2, < 3.4.12

Weakness (CWE)

CWE	Source	Description
CWE-346	cna	CWE-346: Origin Validation Error

CVSS scores (1)

Score	Severity	Version	Source	Vector
4.2	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

References (3)

https://github.com/zitadel/zitadel/security/advisories/GHSA-g5h5-m4hm-xjrr https://github.com/zitadel/zitadel/security/advisories/GHSA-g5h5-m4hm-xjrr
https://github.com/zitadel/zitadel/releases/tag/v3.4.12 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/releases/tag/v4.15.2