CVE-2026-9791Keycloak-rhel9: organization data leak after feature disabled in keycloak
- 4.3MediumCVSS base score
- 0.21%Exploitation in 30 daysEPSS · top 88% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By redhat
Published
- 29 days later
· 29 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | Medium4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVDNVD · Modified | 3.1 | Medium4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.21% · top 88% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Affected products
Red Hat · Red Hat build of Keycloak 26.4
- unaffected 26.4.13-1 – < *
Red Hat · Red Hat build of Keycloak 26.4
- unaffected 26.4-19 – < *
Red Hat · Red Hat build of Keycloak 26.4
- unaffected 26.4-19 – < *
Red Hat · Red Hat build of Keycloak 26.4.13
All versions: unaffected
Red Hat · Red Hat build of Keycloak 26.6
- unaffected 26.6.3-3 – < *
Red Hat · Red Hat build of Keycloak 26.6
- unaffected 26.6-6 – < *
Red Hat · Red Hat build of Keycloak 26.6
- unaffected 26.6-6 – < *
Red Hat · Red Hat build of Keycloak 26.6.3
All versions: unaffected
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.keycloak:keycloak-server-spi-privateGHSA-4q93-v92x-p89f (opens in a new tab)
- Mavenorg.keycloak:keycloak-servicesGHSA-4q93-v92x-p89f (opens in a new tab)
What to do
Workaround: Administrators should verify that disabling the Organizations feature properly blocks all organization-related functionality. Consider implementing additional access controls or removing organization memberships before disabling the feature.
References
References6
- RHSA-2026:25097 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:25098 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:30049 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:30050 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-9791 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2482458 (opens in a new tab)issue-trackingx_refsource_REDHAT
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-32701 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-4q93-v92x-p89f (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-9791)Record last updated .