CVE Watch15 jul 2026

CVE-2026-7507

A session fixation vulnerability was found in Keycloak's login-actions endpoints. An unauthenticated attacker could exploit this flaw by pre

CVSS

7.5

Alto

EPSS

0.6%

p43

KEV

—

Exploit Today

0-100

Publicado: 19 may 2026 · Última mod.: 15 jul 2026 · CWE-290

EPSS · 30d

0.4%EPSS · 30 días0.6%

2026-06-302026-07-16

Descripción técnica

A session fixation vulnerability was found in Keycloak's 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 victim's credentials. A successful exploit could lead to complete account takeover, including highly privileged administrative accounts.

Referencias oficiales

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