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CVE-2026-55672

ZITADEL: Missing client_id binding in OIDC authorization code exchange and refresh token flows (RFC 6749 Section 4.1.3 violation)

Published: Jul 10, 2026Updated: Jul 10, 2026 Sources: CVE List NVDCWE-287
7.4HIGH
NVD MITRE
EPSS Score
0.3%
Top 80.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

Description

ZITADEL is an open source identity management platform. Prior to 3.4.12 and 4.15.2, ZITADEL's OAuth2 and OIDC CodeExchange, RefreshToken, and device token flows fail to verify that the requesting client matches the client that initiated the authorization flow, allowing intercepted grants or refresh tokens to be exchanged under a different client. This issue is fixed in versions 3.4.12 and 4.15.2.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-287CWE-863

Affected Products

zitadel
commercialaka zitadel identity
zitadelSaaS
Security Products / identity-access-mgmt

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://github.com/zitadel/zitadel/security/advisories/GHSA-xqxv-4jc2-x56x
github.com
https://github.com/zitadel/zitadel/commit/562403079a98cf2059cdac11865a45e2f285be71
github.com
https://github.com/zitadel/zitadel/commit/5b1708e0e650398f0ebc3341714f0798b0118917
github.com
and 2 more references View all →

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