CVE-2026-7307

HIGH EPSS 49.5%

Published May 19, 20261mo ago · Modified Jun 17, 20261w ago

7.5 CVSS 3.1

High

Published May 19, 2026 1mo ago

Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score

7.5

Exploitability

3.9

Impact

3.6

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality None

Integrity None

Availability High

Threat Intelligence

EPSS Exploit Probability

49.5% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-1286

Affected Products 1

Vendor	Product	Version	Range
redhat	build_of_keycloak	*	≥26.4 – <26.4.12

References 6

access.redhat.com https://access.redhat.com/errata/RHSA-2026:19594

Vendor Advisory
access.redhat.com https://access.redhat.com/errata/RHSA-2026:19595

Vendor Advisory
access.redhat.com https://access.redhat.com/errata/RHSA-2026:19596

Vendor Advisory
access.redhat.com https://access.redhat.com/errata/RHSA-2026:19597

Vendor Advisory
access.redhat.com https://access.redhat.com/security/cve/CVE-2026-7307

Vendor Advisory
bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2476526

Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.