VULNERABILITY INTELLIGENCE

CVE-2026-7571

CVSS score7.1 HIGH
EPSS probability0.41%
CISA KEVNot currently listed
Published2026-05-19
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Description

A flaw was found in Keycloak. A low-privilege user, with knowledge of user credentials and client ID, can bypass a security control intended to disable the implicit flow in OpenID Connect (OIDC) clients. By manipulating client data during a session restart, an attacker can obtain an access token that should not be available. This vulnerability can also lead to the exposure of these access tokens in server logs, proxy logs, and HTTP Referrer headers, resulting in sensitive information disclosure.

Weakness classification

  • secalert@redhat.com: CWE-472

Primary references