CVE-2026-12112

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-23. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

A flaw was found in the foreman-mcp-server. A session management vulnerability in the MCP Server allows unauthenticated attackers to hijack active administrative sessions due to an improper cache of authenticated client connections, by trusting a non-secret session ID without re-validating authentication tokens and by logging all newly created session IDs to standard logs. This issue can result in privilege escalation and infrastructure-wide code execution.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: 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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

June 23, 2026

Last Modified

July 16, 2026

Advisory Details (3)

Auto-updated Jun 24, 2026
Patch available. Sources: redhat.
redhat

2488031 – (CVE-2026-12112) CVE-2026-12112 foreman-mcp-server: MCP Server: Active Session Hijacking via Insecure Session State Reuse

https://bugzilla.redhat.com/show_bug.cgi?id=2488031
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-12112
redhat Patch Available
https://access.redhat.com/errata/RHSA-2026:28438

Vendor Advisories for CVE-2026-12112(3)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatsatellite/foreman-mcp-server-rhel9:17822284272026-06-23redhat
redhatsatellite/foreman-mcp-server-rhel9:17822286922026-06-23redhat

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.

Data Freshness Timeline

(refreshed 22× in last 7d / 146× 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 290 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-12112?
CVE-2026-12112 is a high vulnerability published on June 23, 2026. A flaw was found in the foreman-mcp-server. A session management vulnerability in the MCP Server allows unauthenticated attackers to hijack active administrative sessions due to an improper cache of authenticated client connections, by trusting a non-secret session ID without re-validating…
When was CVE-2026-12112 disclosed?
CVE-2026-12112 was first published in the National Vulnerability Database on June 23, 2026, with the most recent update on July 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12112 actively exploited?
CVE-2026-12112 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 88.1% of all scored CVEs.
What is the CVSS score of CVE-2026-12112?
CVE-2026-12112 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-12112?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12112, 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-2026-12112

Explore →

Is Your Infrastructure Affected by CVE-2026-12112?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs