CVE-2026-14209Keycloak-admin-ui: keycloak-admin-ui:admin ui extension brute-force-user endpoint bypasses fgapv2 user view restrictions
- 4.3MediumCVSS base score
- 0.39%Exploitation in 30 daysEPSS · top 67% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A vulnerability was discovered in Keycloak's Admin UI extension that allows certain administrative users to bypass security restrictions. When Fine-Grained Admin Permissions (FGAPv2) are enabled, an administrator who should only be able to search for users (but not view their full details) can use a specific "brute-force-user" endpoint to access a user's full profile. This includes sensitive information and security metadata. The issue occurs because the system fails to check if the administrator has the required "view" permission for that specific user when using this particular search path.
Timeline
ID reserved
By redhat
Published
- 36 days later
· 36 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)
- 0.39% · top 67% of all CVEs (13 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 26.4.14-1 – < *
Red Hat · Red Hat build of Keycloak 26.4
- unaffected 26.4-22 – < *
Red Hat · Red Hat build of Keycloak 26.4
- unaffected 26.4-22 – < *
Red Hat · Red Hat build of Keycloak 26.4.14
All versions: unaffected
Red Hat · Red Hat build of Keycloak 26.4.14
All versions: unaffected
Red Hat · Red Hat build of Keycloak 26.6
- unaffected 26.6.5-1 – < *
Red Hat · Red Hat build of Keycloak 26.6
- unaffected 26.6-11 – < *
Red Hat · Red Hat build of Keycloak 26.6
- unaffected 26.6-11 – < *
Red Hat · Red Hat build of Keycloak 26.6.5
All versions: unaffected
Red Hat · Red Hat build of Keycloak 26.6.5
All versions: unaffected
Red Hat · Red Hat build of Keycloak 26.6.5
All versions: unaffected
Red Hat · Red Hat JBoss Enterprise Application Platform Expansion Pack
All versions: affected
What to do
Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
References
References6
- RHSA-2026:50846 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:50847 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:50848 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:50849 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-14209 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2494837 (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-2026-40299 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (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-2026-14209)Record last updated .