CVE-2026-12112

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH 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
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 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(high)
EPSS
4.8%
KEV
Not listed

Published

June 23, 2026

Last Modified

July 1, 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(2)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
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 50× in last 7d / 94× 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. 2026-07-07 01:35 UTCEG score recompute
  2. 2026-07-07 01:35 UTCVendor advisory
  3. 2026-07-07 01:35 UTCGHSA enrichment
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 13:32 UTCEG score recompute
  6. 2026-07-06 13:32 UTCVendor advisory
  7. 2026-07-06 13:31 UTCGHSA enrichment
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-06 01:21 UTCEG score recompute
  10. 2026-07-06 01:21 UTCVendor advisory
  11. 2026-07-06 01:21 UTCGHSA enrichment
  12. 2026-07-05 13:19 UTCEG score recompute
  13. 2026-07-05 13:19 UTCVendor advisory
  14. 2026-07-05 13:19 UTCGHSA enrichment
  15. 2026-07-05 02:30 UTCEPSS rescore
  16. 2026-07-05 02:30 UTCEPSS rescore
  17. 2026-07-05 01:16 UTCEG score recompute
  18. 2026-07-05 01:16 UTCVendor advisory
  19. 2026-07-05 01:16 UTCGHSA enrichment
  20. 2026-07-04 12:57 UTCEG score recompute
  21. 2026-07-04 12:57 UTCVendor advisory
  22. 2026-07-04 12:57 UTCGHSA enrichment
  23. 2026-07-04 06:31 UTCEPSS rescore
  24. 2026-07-04 00:55 UTCEG score recompute
  25. 2026-07-04 00:55 UTCVendor advisory
Show 69 more
  1. 2026-07-04 00:55 UTCGHSA enrichment
  2. 2026-07-03 12:53 UTCEG score recompute
  3. 2026-07-03 12:53 UTCVendor advisory
  4. 2026-07-03 12:52 UTCGHSA enrichment
  5. 2026-07-02 23:58 UTCEG score recompute
  6. 2026-07-02 23:58 UTCVendor advisory
  7. 2026-07-02 23:58 UTCGHSA enrichment
  8. 2026-07-02 11:54 UTCEG score recompute
  9. 2026-07-02 11:54 UTCVendor advisory
  10. 2026-07-02 11:54 UTCGHSA enrichment
  11. 2026-07-01 23:51 UTCEG score recompute
  12. 2026-07-01 23:51 UTCVendor advisory
  13. 2026-07-01 23:51 UTCGHSA enrichment
  14. 2026-07-01 15:06 UTCEPSS rescore
  15. 2026-07-01 15:06 UTCEPSS rescore
  16. 2026-07-01 11:47 UTCEG score recompute
  17. 2026-07-01 11:47 UTCVendor advisory
  18. 2026-07-01 11:47 UTCGHSA enrichment
  19. 2026-06-30 23:45 UTCEG score recompute
  20. 2026-06-30 23:45 UTCVendor advisory
  21. 2026-06-30 23:45 UTCGHSA enrichment
  22. 2026-06-30 23:22 UTCEPSS rescore
  23. 2026-06-30 11:27 UTCEG score recompute
  24. 2026-06-30 11:27 UTCVendor advisory
  25. 2026-06-30 11:27 UTCGHSA enrichment
  26. 2026-06-29 23:21 UTCEG score recompute
  27. 2026-06-29 23:21 UTCVendor advisory
  28. 2026-06-29 23:21 UTCGHSA enrichment
  29. 2026-06-29 14:06 UTCEPSS rescore
  30. 2026-06-29 11:19 UTCEG score recompute
  31. 2026-06-29 11:19 UTCVendor advisory
  32. 2026-06-29 11:19 UTCGHSA enrichment
  33. 2026-06-28 23:17 UTCEG score recompute
  34. 2026-06-28 23:17 UTCVendor advisory
  35. 2026-06-28 23:17 UTCGHSA enrichment
  36. 2026-06-28 14:07 UTCEPSS rescore
  37. 2026-06-28 11:12 UTCEG score recompute
  38. 2026-06-28 11:12 UTCVendor advisory
  39. 2026-06-28 11:12 UTCGHSA enrichment
  40. 2026-06-28 04:56 UTCEPSS rescore
  41. 2026-06-28 04:56 UTCEPSS rescore
  42. 2026-06-27 23:10 UTCEG score recompute
  43. 2026-06-27 23:10 UTCVendor advisory
  44. 2026-06-27 23:10 UTCGHSA enrichment
  45. 2026-06-27 11:08 UTCEG score recompute
  46. 2026-06-27 11:08 UTCVendor advisory
  47. 2026-06-27 11:08 UTCGHSA enrichment
  48. 2026-06-27 03:08 UTCEPSS rescore
  49. 2026-06-26 23:06 UTCEG score recompute
  50. 2026-06-26 23:06 UTCVendor advisory
  51. 2026-06-26 23:06 UTCGHSA enrichment
  52. 2026-06-26 11:04 UTCEG score recompute
  53. 2026-06-26 11:04 UTCVendor advisory
  54. 2026-06-26 11:04 UTCGHSA enrichment
  55. 2026-06-25 22:42 UTCEG score recompute
  56. 2026-06-25 22:42 UTCVendor advisory
  57. 2026-06-25 22:42 UTCGHSA enrichment
  58. 2026-06-25 13:49 UTCEPSS rescore
  59. 2026-06-25 10:39 UTCEG score recompute
  60. 2026-06-25 10:39 UTCVendor advisory
  61. 2026-06-25 10:39 UTCGHSA enrichment
  62. 2026-06-24 22:37 UTCEG score recompute
  63. 2026-06-24 22:37 UTCVendor advisory
  64. 2026-06-24 22:37 UTCGHSA enrichment
  65. 2026-06-24 14:05 UTCEPSS rescore
  66. 2026-06-24 10:35 UTCEG score recompute
  67. 2026-06-24 10:35 UTCGHSA enrichment
  68. 2026-06-23 22:30 UTCEG score recompute
  69. 2026-06-23 22:30 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 1, 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 4.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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