CVE-2024-11734
Org.keycloak:keycloak-quarkus-server: denial of service in keycloak server via security headers
MEDIUM 6.5
At a glance
- Source
- NVD
- EPSS
- EPSS 0.95 % · percentile 61 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Deferred
Description
A denial of service vulnerability was found in Keycloak that could allow an administrative user with the right to change realm settings to disrupt the service. This action is done by modifying any of the security headers and inserting newlines, which causes the Keycloak server to write to a request that has already been terminated, leading to the failure of said request.
Weaknesses (CWE)
- CWE-693 — Protection Mechanism Failure
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | redhat |
| CVSS 3.1 | MEDIUM 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · secalert@redhat.com (Secondary) |
Advisories
- GHSA-w3g8-r9gw-qrh8 — Denial of Service in Keycloak Server via Security Headers
European references
- ENISA EUVD · EUVD-2025-0048
- GCVE · GCVE-0-2024-11734
Affected products
| Product | Versions |
|---|---|
| keycloak | affected 0 < 26.0.8 |
| Red Hat · Red Hat build of Keycloak 26.0 | unaffected 26.0.8-1 < * |
| Red Hat · Red Hat build of Keycloak 26.0 | unaffected 26.0-7 < * |
| Red Hat · Red Hat build of Keycloak 26.0 | unaffected 26.0-8 < * |
| Red Hat · RHBK 26.0.8 | |
| Red Hat · Red Hat Build of Keycloak | |
| Red Hat · Red Hat JBoss Enterprise Application Platform 8 | |
| Red Hat · Red Hat JBoss Enterprise Application Platform Expansion Pack |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |