CVE-2026-2575
Keycloak: keycloak: denial of service due to excessive samlrequest decompression
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:LAvailabilityLow
Weaknesses
Affected Products
Red Hat
commercial·USaka redhat
Exploitability
Official Patch Available
Workaround Available
References
https://access.redhat.com/errata/RHSA-2026:3947
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:3948
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-2575
access.redhat.com
and 1 more references View all →
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