CVE-2026-5138Foreman: foreman: information disclosure via improper validation of nested request parameters
- 4.3MediumCVSS base score
- 0.38%Exploitation in 30 daysEPSS · top 68% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A flaw was found in Foreman. An authenticated user with host-edit permissions could exploit a cross-tenant information disclosure vulnerability. This flaw occurs because the taxonomy_scope controller method does not properly validate organization and location IDs from nested request parameters, bypassing existing authorization checks. This allows the user to leak sensitive infrastructure metadata, including subnet topology, IP ranges, gateways, DNS servers, and VLAN IDs, from organizations and locations they are not authorized to access.
Timeline
ID reserved
By redhat
- 3 months later
· 3 months later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | Medium4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| NVDNVD · Analyzed | 3.1 | Medium4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.38% · top 68% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Affected products
Red Hat · Red Hat Satellite 6.16 for RHEL 8
- unaffected 0:3.12.0.17-1.el8sat – < *
Red Hat · Red Hat Satellite 6.16 for RHEL 9
- unaffected 0:3.12.0.17-1.el9sat – < *
Red Hat · Red Hat Satellite 6.17 for RHEL 9
- unaffected 0:3.14.0.17-1.el9sat – < *
Red Hat · Red Hat Satellite 6.18 for RHEL 9
- unaffected 0:3.16.0.17-1.el9sat – < *
Red Hat · Red Hat Satellite 6.19 for RHEL 9
- unaffected 0:3.18.0.7-1.el9sat – < *
All versions: affected
References
References6
- RHSA-2026:34365 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:34366 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:34367 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- RHSA-2026:34368 (opens in a new tab)vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-5138 (opens in a new tab)vdb-entryx_refsource_REDHAT
- RHBZ#2452971 (opens in a new tab)issue-trackingx_refsource_REDHAT
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-41004 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-5138)Record last updated .