QwikSec

Security Database

CVE

CWE

Training

CVE Database
/

CVE-2026-2575

Back to search

CVE-2026-2575

Published: Mar 18, 2026

Modified: Mar 18, 2026

PUBLISHED

CVSS v3.1

5.3

MEDIUM

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.

VendorProductVersions

Red Hat

Red Hat build of Keycloak 26.4

unaffected
26.4.10-1 - < *

Red Hat

Red Hat build of Keycloak 26.4

unaffected
26.4-12 - < *

Red Hat

Red Hat build of Keycloak 26.4

unaffected
26.4-12 - < *

Red Hat

Red Hat build of Keycloak 26.4.10

All versions

Weaknesses (CWE)

CWE-409

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

References

RHSA-2026:3947
vendor-advisory
x_refsource_REDHAT
RHSA-2026:3948
vendor-advisory
x_refsource_REDHAT
RHBZ#2440149
issue-tracking
x_refsource_REDHAT

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Start Training

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.

Scan Now