CVE-2026-4629Keycloak: keycloak: privilege escalation through hardcoded role mapper injection
- 6.5MediumCVSS base score
- 0.49%Exploitation in 30 daysEPSS · top 58% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A flaw was found in Keycloak. A highly privileged user with `manage-clients` permission can exploit this vulnerability by injecting a hardcoded role mapper into any client. This action allows the user to bypass existing scope restrictions and inject the `realm-admin` role into generated tokens, resulting in privilege escalation and full administrative access to the realm.
Timeline
ID reserved
By redhat
- 3 months later
· 3 months later
Published
- 4 months later
· 4 months 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 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N |
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.49% · top 58% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
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 26.6.5
All versions: unaffected
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
References5
- 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
- https://access.redhat.com/security/cve/CVE-2026-4629 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2450244 (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-2026-40300 (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-2026-4629)Record last updated .