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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-7571 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://access.redhat.com/errata/RHSA-2026:19596 Red Hat, Inc. Vendor Advisory 
https://access.redhat.com/errata/RHSA-2026:19597 Red Hat, Inc. Vendor Advisory 
https://access.redhat.com/security/cve/CVE-2026-7571 Red Hat, Inc. Vendor Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=2464263 Red Hat, Inc. Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-472 External Control of Assumed-Immutable Web Parameter Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-7571
NVD Published Date:
05/19/2026
NVD Last Modified:
06/17/2026
Source:
Red Hat, Inc.