Quick answers
- Is CVE-2026-5138 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-5138 being exploited in the wild.
- How severe is CVE-2026-5138?
- Medium severity, with a CVSS score of 4.3, published 1 July 2026.
- Which products and versions are affected?
- Foreman unspecified.
- Is there a fix for CVE-2026-5138?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-5138 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-5138?
- Check whether you run Foreman at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A vulnerability exists in Foreman's taxonomy_scope controller method due to improper validation of organization and location IDs within nested request parameters. While top-level parameters may be validated, the application fails to verify that nested IDs belong to the user's authorized taxonomy memberships, effectively bypassing the set_taxonomy authorization check. An attacker with 'create_hosts' or 'edit_hosts' permissions can craft a malicious HTTP request containing a foreign organization ID in the nested parameters to leak metadata including subnet topology, IP ranges, gateways, DNS servers, and VLAN IDs. This affects Foreman and Red Hat Satellite 6 environments.
Affected products
- Foreman Foreman unspecified
- Red Hat Red Hat Satellite 6 6
Timeline
- 2026-03-30: disclosed: Initial report in Red Hat Bugzilla
- 2026-07-01: advisory: NVD and Red Hat published advisory details