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CVE-2026-9792

🔶 medium
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Summary

A flaw was found in Keycloak's Client Policies, specifically within the `org.keycloak.protocol.oidc` component. When certain condition providers (client-type, client-roles, client-attributes, client-scopes) are used to enforce security restrictions, the `reject-ropc-grant` executor is silently bypassed. This allows an unauthenticated remote attacker to obtain tokens via a Resource Owner Password Credentials (ROPC) grant, even when a policy is explicitly configured to block it. This bypass can le

Description

A flaw was found in Keycloak's Client Policies, specifically within the `org.keycloak.protocol.oidc` component. When certain condition providers (client-type, client-roles, client-attributes, client-scopes) are used to enforce security restrictions, the `reject-ropc-grant` executor is silently bypassed. This allows an unauthenticated remote attacker to obtain tokens via a Resource Owner Password Credentials (ROPC) grant, even when a policy is explicitly configured to block it. This bypass can lead to unauthorized access and information disclosure.

CVSS Score
6.5
Medium
EPSS Score
0.0
Exploit Probability
Published Date
2026-05-28
First Seen: 2026-05-29
📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 47.8% of all 326,604 vulnerabilities in our database.

#170,379
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: May 29, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
YES
Can be exploited automatically
💥 Technical Impact
Partial
Limited system impact
🏆 Discovered By
Red Hat would like to thank Evan Hendra (Independent Security Researcher) for reporting this issue.
SSVC data provided by CISA
Last Modified 2026-06-03
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE IDs (Weakness Types)
CWE-280

📦 Affected Products 1

Vendor Product Status Affected Versions
redhat build_of_keycloak Affected
v-

🔗 References 2

https://access.redhat.com/security/cve/CVE-2026-9792
Mitigation Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2482459
Issue Tracking Vendor Advisory

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-9791 🔶 medium 4.3 0.0 A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by acces... 2026-05-28
CVE-2026-9793 🔶 medium 5.9 0.0 A flaw was found in Keycloak. When a JSON Web Encryption (JWE) encrypted request object is submitted, Keycloak may incor... 2026-05-28
CVE-2026-9794 🔶 medium 5.3 0.0 A flaw was found in Keycloak. A remote, unauthenticated attacker can exploit this vulnerability by sending specially cra... 2026-05-28
CVE-2026-9795 ⚠️ high 7.3 0.0 A flaw was found in Keycloak's Fine-Grained Admin Permissions (FGAPv2) feature. An administrator with limited client man... 2026-05-28
CVE-2026-9796 🔶 medium 6.5 0.0 A flaw was found in Keycloak. An authenticated administrator with the `manage-clients` role can exploit a Time-of-check ... 2026-05-28
CVE-2026-9798 🔶 medium 4.3 0.1 A flaw was found in Keycloak, an open-source identity and access management solution. When a user account is temporarily... 2026-05-28
These CVEs affect the same products