CVE Watch31 jul 2026

CVE-2026-18217

A flaw was found in the SAML protocol implementation of Keycloak, an open-source identity and access management solution. The issue occurs w

CVSS

3.4

Bajo

EPSS

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KEV

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Exploit Today

0-100

Publicado: 31 jul 2026 · Última mod.: 31 jul 2026 · CWE-20

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

A flaw was found in the SAML protocol implementation of Keycloak, an open-source identity and access management solution. The issue occurs when Keycloak handles SAML authentication requests using the HTTP-Redirect binding. If a client is configured with a wildcard redirect URL, an attacker can craft a request that includes malicious parameters. When a user authenticates, Keycloak appends its legitimate response to the attacker's parameters. This can cause some service providers to process the attacker's data instead of the real login information, potentially leading to a user being logged into the wrong account.

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