Red Hat Keycloak Security Header denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Red Hat Keycloak. This issue affects some unknown processing of the component Security Header Handler. Executing a manipulation can lead to denial of service. This vulnerability appears as CVE-2024-11734. There is no available exploit.

Detailsinfo

A vulnerability was found in Red Hat Keycloak (affected version not known). It has been declared as problematic. This vulnerability affects some unknown functionality of the component Security Header Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

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.

The advisory is shared for download at bugzilla.redhat.com. This vulnerability was named CVE-2024-11734 since 11/26/2024. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/04/2026).

The vulnerability scanner Nessus provides a plugin with the ID 214216 (Keycloak 26.0.8 Multiple Vulnerabilities (26_0_8)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (214216). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 214216
Nessus Name: Keycloak 26.0.8 Multiple Vulnerabilities (26_0_8)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/26/2024 🔍
01/13/2025 +48 days 🔍
01/13/2025 +0 days 🔍
08/04/2026 +568 days 🔍

Sourcesinfo

Vendor: redhat.com

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2024-11734 (🔍)
GCVE (CVE): GCVE-0-2024-11734
GCVE (VulDB): GCVE-100-291328

Entryinfo

Created: 01/13/2025 17:12
Updated: 08/04/2026 12:01
Changes: 01/13/2025 17:12 (50), 01/15/2025 22:16 (2), 08/04/2026 12:01 (17)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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