PT-2026-41878 · Red Hat · Keycloak

Published 2026-05-19 · Updated 2026-05-19 · CVE-2026-7307

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Keycloak (affected versions not specified)

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

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-1286

Related Identifiers

BDU:2026-07379

CVE-2026-7307

Affected Products

Keycloak

References · 12

• https://access.redhat.com/errata/RHSA-2026:19596 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-07379 · Security Note
• https://access.redhat.com/errata/RHSA-2026:19595 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2026:19594 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2026:19597 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-7307 · Security Note
• https://github.com/keycloak/keycloak/issues/49108 · Note
• https://access.redhat.com/security/cve/cve-2026-7307 · Note
• https://access.redhat.com/security/cve/CVE-2026-7307 · Note
• https://github.com/advisories/GHSA-p5mv-gj8j-xqgf · Note
• https://vuldb.com/vuln/364630 · Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2476526 · Note