CVE-2024-11734

MEDIUM

Keycloak < 26.0.8 - Authenticated Denial of Service via Security Header Newline Injection

Title source: llm
STIX 2.1

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.

References (4)

Core 4
Core References
Issue Tracking issue-tracking x_refsource_redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2328846
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:0299
Vendor Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2025:0300
Vendor Advisory vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2024-11734

Scores

CVSS v3 6.5
EPSS 0.0093
EPSS Percentile 55.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-693
Status published
Products (7)
org.keycloak/keycloak-quarkus-server 0 - 26.0.8Maven
Red Hat/Red Hat build of Keycloak 26.0 26.0-7
Red Hat/Red Hat build of Keycloak 26.0 26.0-8
Red Hat/Red Hat build of Keycloak 26.0 26.0.8-1
Red Hat/Red Hat JBoss Enterprise Application Platform 8
Red Hat/Red Hat JBoss Enterprise Application Platform Expansion Pack
Red Hat/RHBK 26.0.8
Published Jan 14, 2025
Tracked Since Feb 18, 2026