{"cve":"CVE-2024-11734","nvd":{"published":"2025-01-14T09:15:19.443","modified":"2026-08-31T01:16:43.687","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-693"],"references":["https://access.redhat.com/errata/RHSA-2025:0299","https://access.redhat.com/errata/RHSA-2025:0300","https://access.redhat.com/security/cve/CVE-2024-11734","https://bugzilla.redhat.com/show_bug.cgi?id=2328846"],"products":[],"source":"nvd","synced_at":"2026-10-19T21:58:20.756570362+00:00"},"epss":{"cve":"CVE-2024-11734","score":0.00945,"percentile":0.61089,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-w3g8-r9gw-qrh8","url":"https://osv.dev/vulnerability/GHSA-w3g8-r9gw-qrh8","summary":"Denial of Service in Keycloak Server via Security Headers","modified":"2026-09-10T03:50:22.205864348Z","packages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-quarkus-server","purl":"pkg:maven/org.keycloak/keycloak-quarkus-server","ranges":["<26.0.8"],"fixed":["26.0.8"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}