CVE-2026-5138

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-07-01. a secondary CVSS source baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — Patch released this week
4.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.3Exploit: NoneExposed: 0

A fix is available — apply it.

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.

CVSS v3
4.3
EG Score
4.3(high)
EPSS
15.9%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 2, 2026

Advisory Details (6)

Auto-updated Jul 3, 2026
Patch available. Sources: redhat.
redhat Patch Available

2452971 – (CVE-2026-5138) CVE-2026-5138 foreman: Foreman: Information disclosure via improper validation of nested request parameters

https://bugzilla.redhat.com/show_bug.cgi?id=2452971
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-5138
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:34368
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:34367
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:34366
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:34365

Vendor Advisories for CVE-2026-5138(4)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatforeman-0:3.16.0.17-1.el9sat2026-07-01redhat
redhatforeman-0:3.18.0.7-1.el9sat2026-07-01redhat
redhatforeman-0:3.12.0.17-1.el9sat2026-07-01redhat
redhatforeman-0:3.14.0.17-1.el9sat2026-07-01redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 23× in last 7d / 23× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 19:32 UTCEG score recompute
  2. 2026-07-06 19:32 UTCVendor advisory
  3. 2026-07-06 19:32 UTCGHSA enrichment
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 16:27 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-05 18:49 UTCEG score recompute
  9. 2026-07-05 18:49 UTCVendor advisory
  10. 2026-07-05 18:49 UTCGHSA enrichment
  11. 2026-07-05 02:31 UTCEPSS rescore
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-04 18:08 UTCEG score recompute
  14. 2026-07-04 18:08 UTCVendor advisory
  15. 2026-07-04 18:08 UTCGHSA enrichment
  16. 2026-07-03 17:26 UTCEG score recompute
  17. 2026-07-03 17:26 UTCVendor advisory
  18. 2026-07-03 17:26 UTCGHSA enrichment
  19. 2026-07-02 16:44 UTCEG score recompute
  20. 2026-07-02 16:44 UTCVendor advisory
  21. 2026-07-02 16:44 UTCGHSA enrichment
  22. 2026-07-01 16:03 UTCEG score recompute
  23. 2026-07-01 16:03 UTCGHSA enrichment

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-5138?
CVE-2026-5138 is a medium vulnerability published on July 1, 2026. 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,…
When was CVE-2026-5138 disclosed?
CVE-2026-5138 was first published in the National Vulnerability Database on July 1, 2026, with the most recent update on July 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-5138 actively exploited?
CVE-2026-5138 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 15.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-5138?
CVE-2026-5138 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-5138?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-5138, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-5138

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