CVE-2026-5138

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM 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
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 4.3Exploit: None knownExposed services: Not assessed

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
4.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100

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%
EPSS PROB
0.4%
EPSS %ILE
29th
KEV
Not listed

Published

July 1, 2026

Last Modified

July 9, 2026

Advisory Details (6)

Auto-updated Jul 3, 2026
Patch available. Sources: redhat.
redhatMentions a patch (unverified)

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
redhatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-5138
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2026:34368
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2026:34367
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2026:34366
redhatMentions a patch (unverified)
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 / EcosystemFix (by version range) / 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 7× in last 7d / 36× 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.

Showing the most recent 100 of 238 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:13 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
  4. 2026-10-06 15:18 UTCEPSS rescore
  5. 2026-10-05 17:43 UTCEPSS rescore
  6. 2026-10-04 23:22 UTCEPSS rescore
  7. 2026-10-03 14:26 UTCEPSS rescore
  8. 2026-10-02 17:56 UTCEPSS rescore
  9. 2026-10-01 19:50 UTCEPSS rescore
  10. 2026-09-30 15:03 UTCEPSS rescore
  11. 2026-09-28 13:51 UTCEPSS rescore
  12. 2026-09-27 13:48 UTCEPSS rescore
  13. 2026-09-26 15:59 UTCEPSS rescore
  14. 2026-09-24 14:04 UTCEPSS rescore
  15. 2026-09-23 17:54 UTCEPSS rescore
  16. 2026-09-23 06:53 UTCEG score recompute
  17. 2026-09-23 06:53 UTCVendor advisory
  18. 2026-09-23 06:53 UTCGHSA enrichment
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-18 19:28 UTCEPSS rescore
  21. 2026-09-18 06:35 UTCEG score recompute
  22. 2026-09-18 06:35 UTCVendor advisory
  23. 2026-09-18 06:35 UTCGHSA enrichment
  24. 2026-09-17 19:31 UTCEPSS rescore
  25. 2026-09-16 14:08 UTCEPSS rescore
Show 75 more
  1. 2026-09-16 05:15 UTCEPSS rescore
  2. 2026-09-15 03:11 UTCEPSS rescore
  3. 2026-09-14 00:24 UTCEG score recompute
  4. 2026-09-14 00:24 UTCVendor advisory
  5. 2026-09-14 00:24 UTCGHSA enrichment
  6. 2026-09-13 16:47 UTCEPSS rescore
  7. 2026-09-12 14:47 UTCEG score recompute
  8. 2026-09-12 14:47 UTCVendor advisory
  9. 2026-09-12 14:47 UTCGHSA enrichment
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-10 09:35 UTCEPSS rescore
  12. 2026-09-08 22:01 UTCEPSS rescore
  13. 2026-09-07 16:01 UTCEPSS rescore
  14. 2026-09-06 13:47 UTCEPSS rescore
  15. 2026-09-06 02:31 UTCEG score recompute
  16. 2026-09-06 02:31 UTCVendor advisory
  17. 2026-09-06 02:31 UTCGHSA enrichment
  18. 2026-09-04 05:07 UTCEPSS rescore
  19. 2026-09-02 14:12 UTCEPSS rescore
  20. 2026-09-01 13:54 UTCEPSS rescore
  21. 2026-09-01 04:40 UTCEPSS rescore
  22. 2026-08-30 19:17 UTCEPSS rescore
  23. 2026-08-30 13:12 UTCEG score recompute
  24. 2026-08-30 13:12 UTCVendor advisory
  25. 2026-08-30 13:12 UTCGHSA enrichment
  26. 2026-08-30 01:22 UTCEPSS rescore
  27. 2026-08-28 21:42 UTCEPSS rescore
  28. 2026-08-27 22:28 UTCEG score recompute
  29. 2026-08-27 22:28 UTCVendor advisory
  30. 2026-08-27 22:28 UTCGHSA enrichment
  31. 2026-08-27 14:25 UTCEPSS rescore
  32. 2026-08-26 14:46 UTCEPSS rescore
  33. 2026-08-25 13:49 UTCEPSS rescore
  34. 2026-08-24 10:55 UTCEG score recompute
  35. 2026-08-24 10:55 UTCVendor advisory
  36. 2026-08-24 10:55 UTCGHSA enrichment
  37. 2026-08-23 08:02 UTCEG score recompute
  38. 2026-08-23 08:02 UTCVendor advisory
  39. 2026-08-23 08:02 UTCGHSA enrichment
  40. 2026-08-23 00:19 UTCEPSS rescore
  41. 2026-08-22 07:21 UTCEG score recompute
  42. 2026-08-22 07:21 UTCVendor advisory
  43. 2026-08-22 07:21 UTCGHSA enrichment
  44. 2026-08-21 23:49 UTCEPSS rescore
  45. 2026-08-21 05:26 UTCEG score recompute
  46. 2026-08-21 05:26 UTCVendor advisory
  47. 2026-08-21 05:26 UTCGHSA enrichment
  48. 2026-08-20 22:55 UTCEPSS rescore
  49. 2026-08-20 04:45 UTCEG score recompute
  50. 2026-08-20 04:45 UTCVendor advisory
  51. 2026-08-20 04:45 UTCGHSA enrichment
  52. 2026-08-19 17:04 UTCEPSS rescore
  53. 2026-08-18 21:00 UTCEG score recompute
  54. 2026-08-18 21:00 UTCVendor advisory
  55. 2026-08-18 21:00 UTCGHSA enrichment
  56. 2026-08-18 13:48 UTCEPSS rescore
  57. 2026-08-17 13:47 UTCEPSS rescore
  58. 2026-08-17 10:39 UTCEG score recompute
  59. 2026-08-17 10:39 UTCVendor advisory
  60. 2026-08-17 10:39 UTCGHSA enrichment
  61. 2026-08-16 14:56 UTCEPSS rescore
  62. 2026-08-16 09:58 UTCEG score recompute
  63. 2026-08-16 09:58 UTCVendor advisory
  64. 2026-08-16 09:58 UTCGHSA enrichment
  65. 2026-08-15 09:18 UTCEG score recompute
  66. 2026-08-15 09:18 UTCVendor advisory
  67. 2026-08-15 09:18 UTCGHSA enrichment
  68. 2026-08-15 01:30 UTCEPSS rescore
  69. 2026-08-14 08:36 UTCEG score recompute
  70. 2026-08-14 08:36 UTCVendor advisory
  71. 2026-08-14 08:36 UTCGHSA enrichment
  72. 2026-08-13 22:00 UTCEPSS rescore
  73. 2026-08-13 07:55 UTCEG score recompute
  74. 2026-08-13 07:55 UTCVendor advisory
  75. 2026-08-13 07:55 UTCGHSA enrichment

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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 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 0.4% probability of exploitation in the next 30 days (29th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-5138?
CVE-2026-5138 has a CVSS base score of 4.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-5138?
A fix for CVE-2026-5138 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-5138 are linked in the Vendor Advisories panel on this page.

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