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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-2575 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://access.redhat.com/errata/RHSA-2026:3947 Red Hat, Inc. Vendor Advisory 
https://access.redhat.com/errata/RHSA-2026:3948 Red Hat, Inc. Vendor Advisory 
https://access.redhat.com/security/cve/CVE-2026-2575 Red Hat, Inc. Vendor Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=2440149 Red Hat, Inc. Issue Tracking  Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-409 Improper Handling of Highly Compressed Data (Data Amplification) Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-2575
NVD Published Date:
03/18/2026
NVD Last Modified:
06/17/2026
Source:
Red Hat, Inc.