CVE-2026-82965
HIGH
MEDIUM
Priority: 0.05
BB Relevance:
75/100
Published: 2026-11-05
Modified: 2026-11-06
First seen: 2026-11-05
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
A flaw was found in the SAML implementation of Keycloak, an open-source identity and access management solution. The SAML Artifact Resolution and ECP SOAP endpoints do not properly limit the size or complexity of incoming XML requests. An unauthenticated remote attacker can exploit this by sending specially crafted, large XML messages that cause the server to consume excessive memory. This leads to the application running out of memory and crashing, resulting in a denial of service for all users.
Weakness Classification (1)
References & Advisories (6)
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT