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CVE-2026-7571

7.1 · HIGH

A flaw was found in Keycloak.

Published May 19, 2026CWE-472EPSS 0.50%

Overview

CVE-2026-7571 is a high-severity vulnerability. It was published on May 19, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refaccess.redhat.com/errata/RHSA-2026:19596Refaccess.redhat.com/errata/RHSA-2026:19597Refaccess.redhat.com/security/cve/CVE-2026-7571Refbugzilla.redhat.com/show_bug.cgi?id=2464263

How CyberStrike helps

Frequently asked questions

What is CVE-2026-7571?

CVE-2026-7571 is a high-severity vulnerability. It was published on May 19, 2026 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2026-7571?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-7571?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-7571?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-7571 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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