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 — 4 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 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)
EG Risk
24(Track)
EG Risk 24/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity43% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
16%
KEV
Not listed

Published

July 1, 2026

Last Modified

July 9, 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 17× in last 7d / 75× 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. 2026-07-26 14:54 UTCEPSS rescore
  2. 2026-07-26 14:54 UTCEPSS rescore
  3. 2026-07-26 13:21 UTCEG score recompute
  4. 2026-07-26 13:21 UTCVendor advisory
  5. 2026-07-26 13:20 UTCGHSA enrichment
  6. 2026-07-25 14:18 UTCEPSS rescore
  7. 2026-07-25 14:18 UTCEPSS rescore
  8. 2026-07-24 14:18 UTCEPSS rescore
  9. 2026-07-24 14:18 UTCEPSS rescore
  10. 2026-07-23 14:18 UTCEPSS rescore
  11. 2026-07-23 14:18 UTCEPSS rescore
  12. 2026-07-23 03:19 UTCEG score recompute
  13. 2026-07-22 14:08 UTCEPSS rescore
  14. 2026-07-22 14:08 UTCEPSS rescore
  15. 2026-07-21 15:25 UTCEPSS rescore
  16. 2026-07-21 15:25 UTCEPSS rescore
  17. 2026-07-20 17:08 UTCEPSS rescore
  18. 2026-07-19 14:31 UTCEPSS rescore
  19. 2026-07-19 02:29 UTCEPSS rescore
  20. 2026-07-18 10:04 UTCEPSS rescore
  21. 2026-07-17 02:37 UTCVendor advisory
  22. 2026-07-17 02:37 UTCGHSA enrichment
  23. 2026-07-16 17:03 UTCEPSS rescore
  24. 2026-07-16 01:56 UTCVendor advisory
  25. 2026-07-16 01:56 UTCGHSA enrichment
Show 50 more
  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 02:00 UTCEPSS rescore
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-15 01:14 UTCVendor advisory
  6. 2026-07-15 01:14 UTCGHSA enrichment
  7. 2026-07-14 00:33 UTCVendor advisory
  8. 2026-07-14 00:33 UTCGHSA enrichment
  9. 2026-07-13 22:31 UTCEPSS rescore
  10. 2026-07-13 06:13 UTCEPSS rescore
  11. 2026-07-13 06:13 UTCEPSS rescore
  12. 2026-07-12 23:52 UTCVendor advisory
  13. 2026-07-12 23:52 UTCGHSA enrichment
  14. 2026-07-12 05:46 UTCEPSS rescore
  15. 2026-07-11 23:11 UTCVendor advisory
  16. 2026-07-11 23:10 UTCGHSA enrichment
  17. 2026-07-11 08:27 UTCEPSS rescore
  18. 2026-07-11 08:27 UTCEPSS rescore
  19. 2026-07-10 22:28 UTCVendor advisory
  20. 2026-07-10 22:27 UTCGHSA enrichment
  21. 2026-07-09 21:36 UTCVendor advisory
  22. 2026-07-09 21:36 UTCGHSA enrichment
  23. 2026-07-09 19:10 UTCEPSS rescore
  24. 2026-07-09 19:10 UTCEPSS rescore
  25. 2026-07-08 20:56 UTCVendor advisory
  26. 2026-07-08 20:56 UTCGHSA enrichment
  27. 2026-07-08 15:16 UTCEPSS rescore
  28. 2026-07-08 15:16 UTCEPSS rescore
  29. 2026-07-07 20:15 UTCVendor advisory
  30. 2026-07-07 20:14 UTCGHSA enrichment
  31. 2026-07-07 13:46 UTCEPSS rescore
  32. 2026-07-07 13:46 UTCEPSS rescore
  33. 2026-07-06 19:32 UTCVendor advisory
  34. 2026-07-06 19:32 UTCGHSA enrichment
  35. 2026-07-06 16:27 UTCEPSS rescore
  36. 2026-07-06 16:27 UTCEPSS rescore
  37. 2026-07-06 02:23 UTCEPSS rescore
  38. 2026-07-06 02:23 UTCEPSS rescore
  39. 2026-07-05 18:49 UTCVendor advisory
  40. 2026-07-05 18:49 UTCGHSA enrichment
  41. 2026-07-05 02:31 UTCEPSS rescore
  42. 2026-07-05 02:30 UTCEPSS rescore
  43. 2026-07-04 18:08 UTCVendor advisory
  44. 2026-07-04 18:08 UTCGHSA enrichment
  45. 2026-07-03 17:26 UTCVendor advisory
  46. 2026-07-03 17:26 UTCGHSA enrichment
  47. 2026-07-02 16:44 UTCVendor advisory
  48. 2026-07-02 16:44 UTCGHSA enrichment
  49. 2026-07-01 16:03 UTCEG score recompute
  50. 2026-07-01 16:03 UTCGHSA enrichment

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 9, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 83.7% of all scored CVEs.
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

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