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CVE Vulnerability Details :
CVE-2026-55672
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-10 Jul, 2026 | 17:19
Updated At-10 Jul, 2026 | 18:38
Rejected At-
▼CVE Numbering Authority (CNA)
ZITADEL: Missing client_id binding in OIDC authorization code exchange and refresh token flows (RFC 6749 Section 4.1.3 violation)

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.

Affected Products
Vendor
zitadel
Product
zitadel
Versions
Affected
  • >= 4.0.0-rc.1, < 4.15.2
  • < 3.4.12
Problem Types
TypeCWE IDDescription
CWECWE-287CWE-287: Improper Authentication
CWECWE-863CWE-863: Incorrect Authorization
Type: CWE
CWE ID: CWE-287
Description: CWE-287: Improper Authentication
Type: CWE
CWE ID: CWE-863
Description: CWE-863: Incorrect Authorization
Metrics
VersionBase scoreBase severityVector
3.17.4HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Version: 3.1
Base score: 7.4
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/zitadel/zitadel/security/advisories/GHSA-xqxv-4jc2-x56x
x_refsource_CONFIRM
https://github.com/zitadel/zitadel/commit/562403079a98cf2059cdac11865a45e2f285be71
x_refsource_MISC
https://github.com/zitadel/zitadel/commit/5b1708e0e650398f0ebc3341714f0798b0118917
x_refsource_MISC
https://github.com/zitadel/zitadel/releases/tag/v3.4.12
x_refsource_MISC
https://github.com/zitadel/zitadel/releases/tag/v4.15.2
x_refsource_MISC
Hyperlink: https://github.com/zitadel/zitadel/security/advisories/GHSA-xqxv-4jc2-x56x
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/zitadel/zitadel/commit/562403079a98cf2059cdac11865a45e2f285be71
Resource:
x_refsource_MISC
Hyperlink: https://github.com/zitadel/zitadel/commit/5b1708e0e650398f0ebc3341714f0798b0118917
Resource:
x_refsource_MISC
Hyperlink: https://github.com/zitadel/zitadel/releases/tag/v3.4.12
Resource:
x_refsource_MISC
Hyperlink: https://github.com/zitadel/zitadel/releases/tag/v4.15.2
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found