CVE-2024-11734
Org.keycloak:keycloak-quarkus-server: denial of service in keycloak server via security headers
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-693 |
| Published | Jan 14, 2025 |
| Last Updated | Nov 20, 2025 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Red Hat / Red Hat build of Keycloak 26.0
All versions affected Red Hat / Red Hat build of Keycloak 26.0
All versions affected Red Hat / Red Hat build of Keycloak 26.0
All versions affected Red Hat / RHBK 26.0.8
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform 8
All versions affected Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack
All versions affected References
Credits
Red Hat would like to thank Chase Bowman (Contract Security) for reporting this issue.