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CVE-2026-1486

8.8 · HIGH

A flaw was found in Keycloak.

Published Feb 9, 2026CWE-358EPSS 0.50%

Overview

CVE-2026-1486 is a high-severity vulnerability. It was published on February 9, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, 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 vulnerability exists in the jwt-authorization-grant flow where the server fails to verify if an Identity Provider (IdP) is enabled before issuing tokens. The issuer lookup mechanism (lookupIdentityProviderFromIssuer) retrieves the IdP configuration but does not filter for isEnabled=false. If an administrator disables an IdP (e.g., due to a compromise or offboarding), an entity possessing that IdP's signing key can still generate valid JWT assertions that Keycloak accepts, resulting in the issuance of valid access tokens.

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-2026:2365Refaccess.redhat.com/errata/RHSA-2026:2366Refaccess.redhat.com/security/cve/CVE-2026-1486Refbugzilla.redhat.com/show_bug.cgi?id=2433347Refaccess.redhat.com/errata/RHSA-2026:2365Refaccess.redhat.com/errata/RHSA-2026:2366Refaccess.redhat.com/security/cve/CVE-2026-1486Refbugzilla.redhat.com/show_bug.cgi?id=2433347Refsecurity.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1486.json

How CyberStrike helps

Frequently asked questions

What is CVE-2026-1486?

CVE-2026-1486 is a high-severity vulnerability. It was published on February 9, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-1486?

This vulnerability has a CVSS 3.1 base score of 8.8, 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-2026-1486?

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-2026-1486?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-1486 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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