CVE Vulnerabilities

CVE-2026-7507

Authentication Bypass by Spoofing

Published: May 19, 2026 | Modified: Jun 30, 2026
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
7.5 IMPORTANT
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Ubuntu
root.io logo minimus.io logo echo.ai logo

A session fixation vulnerability was found in Keycloaks login-actions endpoints. An unauthenticated attacker could exploit this flaw by pre-creating an authentication session and tricking a victim into visiting a maliciously crafted link. By leveraging the /login-actions/restart endpoint—which processes session handles without adequate CSRF protection or cookie ownership validation—an attacker can reset the authentication flow state. This causes Single Sign-On (SSO) to authenticate the victim transparently upon clicking the link, allowing the attacker to hijack the required-action form without needing the victims credentials. A successful exploit could lead to complete account takeover, including highly privileged administrative accounts.

Weakness

This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

Affected Software

NameVendorStart VersionEnd Version
Build_of_keycloakRedhat26.4 (including)26.4.12 (excluding)
Red Hat build of Keycloak 26.2RedHatrhbk/keycloak-operator-bundle:26.2.16-1*
Red Hat build of Keycloak 26.2RedHatrhbk/keycloak-rhel9:26.2-21*
Red Hat build of Keycloak 26.2RedHatrhbk/keycloak-rhel9-operator:26.2-21*
Red Hat build of Keycloak 26.2.16RedHatrhbk/keycloak-rhel9-operator*
Red Hat build of Keycloak 26.4RedHatrhbk/keycloak-operator-bundle:26.4.12-1*
Red Hat build of Keycloak 26.4RedHatrhbk/keycloak-rhel9:26.4-17*
Red Hat build of Keycloak 26.4RedHatrhbk/keycloak-rhel9-operator:26.4-17*
Red Hat build of Keycloak 26.4.12RedHatrhbk/keycloak-rhel9-operator*

References