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CVE-2026-7307

nvd nist
Published: May 19, 2026Modified: Jul 15, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: secalert@redhat.com (Secondary)

Description

A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service (DoS) where the server becomes unavailable.

Affected (1)

Redhat
1 product
Build Of Keycloak
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Build Of Keycloak
From 26.4 to 26.4.12

Related CWEs

CWE-1286
Improper Validation of Syntactic Correctness of Input
The product receives input that is expected to be well-formed - i.e., to comply with a certain syntax - but it does not validate or incorrectly validates that the input complies with the syntax.

References (13)

Source: secalert@redhat.com
Vendor Advisory
Source: secalert@redhat.com
Vendor Advisory
Source: secalert@redhat.com
Vendor Advisory
Source: secalert@redhat.com
Vendor Advisory
Source: secalert@redhat.com
Vendor Advisory
Source: secalert@redhat.com
Vendor Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Vendor Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Vendor Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Vendor Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Vendor Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Vendor Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Vendor Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

Timeline

No history available yet.