CVE-2026-2575

A flaw was found in Keycloak. An unauthenticated remote attacker can trigger an application level Denial of Service (DoS) by sending a highly compressed SAMLRequest through the SAML Redirect Binding. The server fails to enforce size limits during DEFLATE decompression, leading to an OutOfMemoryError (OOM) and subsequent process termination. This vulnerability allows an attacker to disrupt the availability of the service.

Score
CVSS 3.1 5.3 Medium
Status
Modified - secalert@redhat.com
Published
2026-03-18
Last modified
2026-10-06
Weaknesses
CWE-409

Affected products

References

 
 
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