CVE-2026-9791
Last modified
CVE-2026-9791 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect (OIDC) token with the 'organization' scope. EPSS estimates a 0.21% chance of exploitation in the next 30 days.
Description
A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect (OIDC) token with the 'organization' scope. This allows organization metadata to be disclosed in tokens, even after an administrator has explicitly disabled the Organizations feature, potentially leading to incorrect authorization decisions by resource servers.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Build Of Keycloak | All versions |
References
- https://access.redhat.com/security/cve/CVE-2026-9791Mitigation, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2482458Issue Tracking, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2026-9791?
How severe is CVE-2026-9791?
How do I fix CVE-2026-9791?
Are you affected by CVE-2026-9791?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST