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CVE-2026-5136

8.8 · HIGH

A flaw was found in Foreman.

Published Jul 1, 2026CWE-266EPSS 0.56%

Overview

CVE-2026-5136 is a high-severity vulnerability. It was published on July 1, 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 Foreman. The Usergroup model in Foreman does not properly validate role assignments against the calling user's permissions. This allows an authenticated user with usergroup management permissions to attach arbitrary roles, including administrative roles, to a user group and then add themselves as a member. Successful exploitation of this vulnerability leads to full privilege escalation, granting the attacker administrator-level access.

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-2026:34365Refaccess.redhat.com/errata/RHSA-2026:34366Refaccess.redhat.com/errata/RHSA-2026:34367Refaccess.redhat.com/errata/RHSA-2026:34368Refaccess.redhat.com/security/cve/CVE-2026-5136Refbugzilla.redhat.com/show_bug.cgi?id=2452970

How CyberStrike helps

Frequently asked questions

What is CVE-2026-5136?

CVE-2026-5136 is a high-severity vulnerability. It was published on July 1, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-5136?

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-2026-5136?

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-2026-5136?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-5136 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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