CVE-2026-44939

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 1.3%, top 31% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
9.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.4Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A command injection vulnerability in the Rancher Manager cluster before 2.14.2 import endpoint /v3/import/{token}_{clusterId}.yaml through unsanitized YAML parameters could allow remote attackers to break out of an image, and execute e.g. malicious containers.

CVSS v3
9.4
EG Score
9.4(medium)
EG Risk
47(Track)
EG Risk 47/100SSVC: 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
Severity94% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
69%
KEV
Not listed

Published

June 19, 2026

Last Modified

June 24, 2026

Advisory Details (1)

Auto-updated Aug 23, 2026
Patch available. Sources: github.
github Patch Available

Command injection through unsanitized YAML parameter in Rancher · Advisory · rancher/rancher · GitHub

https://github.com/rancher/rancher/security/advisories/GHSA-mhc6-2gfq-xx62

Vendor Advisories for CVE-2026-44939(1)

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

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/rancher/rancher—0.0.0-20260617231817-2aa77eb283e7—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 52× 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. 2026-08-25 13:49 UTCEPSS rescore
  2. 2026-08-24 14:35 UTCEG score recompute
  3. 2026-08-23 03:57 UTCEG score recompute
  4. 2026-08-23 00:19 UTCEPSS rescore
  5. 2026-08-23 00:02 UTCEG score recompute
  6. 2026-08-21 23:49 UTCEPSS rescore
  7. 2026-08-21 00:16 UTCEG score recompute
  8. 2026-08-20 22:55 UTCEPSS rescore
  9. 2026-08-20 08:07 UTCEG score recompute
  10. 2026-08-19 17:04 UTCEPSS rescore
  11. 2026-08-19 07:21 UTCEG score recompute
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-17 13:47 UTCEPSS rescore
  14. 2026-08-16 17:14 UTCEG score recompute
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 05:35 UTCEG score recompute
  17. 2026-08-16 02:14 UTCEPSS rescore
  18. 2026-08-15 02:00 UTCEG score recompute
  19. 2026-08-15 01:30 UTCEPSS rescore
  20. 2026-08-13 22:49 UTCEG score recompute
  21. 2026-08-13 22:00 UTCEPSS rescore
  22. 2026-08-12 14:15 UTCEG score recompute
  23. 2026-08-12 13:51 UTCEPSS rescore
  24. 2026-08-11 14:10 UTCEG score recompute
  25. 2026-08-11 02:30 UTCEG score recompute
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  1. 2026-08-11 00:00 UTCEPSS rescore
  2. 2026-08-09 15:07 UTCEG score recompute
  3. 2026-08-09 13:46 UTCEPSS rescore
  4. 2026-08-08 19:43 UTCEG score recompute
  5. 2026-08-08 16:37 UTCEPSS rescore
  6. 2026-08-07 16:34 UTCEG score recompute
  7. 2026-08-06 17:17 UTCEG score recompute
  8. 2026-08-06 13:46 UTCEPSS rescore
  9. 2026-08-05 21:51 UTCEG score recompute
  10. 2026-08-05 19:17 UTCEPSS rescore
  11. 2026-08-04 15:22 UTCEG score recompute
  12. 2026-08-04 15:10 UTCEPSS rescore
  13. 2026-08-04 10:38 UTCEPSS rescore
  14. 2026-08-03 14:22 UTCEG score recompute
  15. 2026-08-03 10:36 UTCEPSS rescore
  16. 2026-08-02 04:23 UTCEG score recompute
  17. 2026-08-02 02:27 UTCEPSS rescore
  18. 2026-08-01 05:05 UTCEG score recompute
  19. 2026-08-01 04:16 UTCEPSS rescore
  20. 2026-07-30 22:25 UTCEG score recompute
  21. 2026-07-30 16:28 UTCEPSS rescore
  22. 2026-07-30 03:02 UTCEG score recompute
  23. 2026-07-30 01:30 UTCEPSS rescore
  24. 2026-07-29 01:40 UTCEG score recompute
  25. 2026-07-28 15:36 UTCEPSS rescore
  26. 2026-07-27 18:04 UTCEG score recompute
  27. 2026-07-27 14:13 UTCEPSS rescore
  28. 2026-07-26 17:02 UTCEG score recompute
  29. 2026-07-26 14:54 UTCEPSS rescore
  30. 2026-07-26 14:54 UTCEPSS rescore
  31. 2026-07-25 14:18 UTCEPSS rescore
  32. 2026-07-24 14:17 UTCEPSS rescore
  33. 2026-07-23 14:18 UTCEPSS rescore
  34. 2026-07-23 03:15 UTCEG score recompute
  35. 2026-07-22 14:08 UTCEPSS rescore
  36. 2026-07-21 15:24 UTCEPSS rescore
  37. 2026-07-20 17:08 UTCEPSS rescore
  38. 2026-07-19 14:31 UTCEPSS rescore
  39. 2026-07-19 02:29 UTCEPSS rescore
  40. 2026-07-18 10:04 UTCEPSS rescore
  41. 2026-07-16 17:03 UTCEPSS rescore
  42. 2026-07-15 16:57 UTCEPSS rescore
  43. 2026-07-15 02:00 UTCEPSS rescore
  44. 2026-07-13 22:30 UTCEPSS rescore
  45. 2026-07-13 06:13 UTCEPSS rescore
  46. 2026-07-12 05:46 UTCEPSS rescore
  47. 2026-07-11 08:27 UTCEPSS rescore
  48. 2026-07-09 19:10 UTCEPSS rescore
  49. 2026-07-08 15:16 UTCEPSS rescore
  50. 2026-07-07 13:46 UTCEPSS rescore
  51. 2026-07-06 16:27 UTCEPSS rescore
  52. 2026-07-06 02:23 UTCEPSS rescore
  53. 2026-07-05 02:30 UTCEPSS rescore
  54. 2026-07-04 06:31 UTCEPSS rescore
  55. 2026-07-01 15:07 UTCEPSS rescore
  56. 2026-06-30 23:22 UTCEPSS rescore
  57. 2026-06-29 14:06 UTCEPSS rescore
  58. 2026-06-29 14:06 UTCEPSS rescore
  59. 2026-06-28 14:07 UTCEPSS rescore
  60. 2026-06-28 04:56 UTCEPSS rescore
  61. 2026-06-28 04:56 UTCEPSS rescore
  62. 2026-06-27 03:08 UTCEPSS rescore
  63. 2026-06-25 13:49 UTCEPSS rescore
  64. 2026-06-25 13:49 UTCEPSS rescore
  65. 2026-06-24 14:05 UTCEPSS rescore
  66. 2026-06-23 21:33 UTCEPSS rescore
  67. 2026-06-19 15:17 UTCEG score recompute
  68. 2026-06-19 15:14 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-44939?
CVE-2026-44939 is a critical vulnerability published on June 19, 2026. A command injection vulnerability in the Rancher Manager cluster before 2.14.2 import endpoint /v3/import/{token}_{clusterId}.yaml through unsanitized YAML parameters could allow remote attackers to break out of an image, and execute e.g. malicious containers.
When was CVE-2026-44939 disclosed?
CVE-2026-44939 was first published in the National Vulnerability Database on June 19, 2026, with the most recent update on June 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44939 actively exploited?
CVE-2026-44939 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 31.5% of all scored CVEs.
What is the CVSS score of CVE-2026-44939?
CVE-2026-44939 has a CVSS v3 base score of 9.4 (NVD).
How do I remediate CVE-2026-44939?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44939, 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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