CVE-2026-42454

CRITICALNVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.9 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 53% 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, nvd
9.9
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.9Exploit: NoneExposed: 0

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

Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. Prior to version 2.1.0, all Docker container management endpoints in Termix interpolate the containerId URL path parameter and WebSocket message field directly into shell commands executed via ssh2.Client.exec() on remote managed servers without any sanitization or validation. An authenticated attacker can inject arbitrary OS commands by crafting a malicious container ID, achieving Remote Code Execution on any managed server. This issue has been patched in version 2.1.0.

CVSS v3
9.9
EG Score
9.9(medium)
EPSS
47.1%
KEV
Not listed

Published

May 8, 2026

Last Modified

May 12, 2026

Advisory Details (2)

Auto-updated Jul 12, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_release.
github Patch Available🟡 PoC Available

OS Command Injection in Docker Container Management Endpoints · Advisory · Termix-SSH/Termix · GitHub

https://github.com/Termix-SSH/Termix/security/advisories/GHSA-c2g2-hqgq-6w9v
github_release Patch Available

release-2.1.0

Patch available: Termix-SSH/Termix release-2.1.0-tag

https://github.com/Termix-SSH/Termix/releases/tag/release-2.1.0-tag

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 42× 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 171 total refreshes for this CVE.

  1. 2026-07-16 09:53 UTCOSV refresh
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 02:00 UTCEPSS rescore
  4. 2026-07-13 22:30 UTCEPSS rescore
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  20. 2026-06-28 08:54 UTCEG score recompute
  21. 2026-06-28 04:56 UTCEPSS rescore
  22. 2026-06-28 03:53 UTCEG score recompute
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  1. 2026-06-26 21:15 UTCEG score recompute
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  15. 2026-06-17 05:44 UTCEG score recompute
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  19. 2026-06-15 17:49 UTCEPSS rescore
  20. 2026-06-15 08:03 UTCEG score recompute
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  28. 2026-06-13 23:00 UTCEPSS rescore
  29. 2026-06-13 09:48 UTCEG score recompute
  30. 2026-06-12 23:12 UTCEPSS rescore
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  32. 2026-06-12 22:45 UTCEG score recompute
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  40. 2026-06-11 14:00 UTCEPSS rescore
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  42. 2026-06-11 08:32 UTCEG score recompute
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  45. 2026-06-10 22:18 UTCEPSS rescore
  46. 2026-06-10 19:31 UTCEG score recompute
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  48. 2026-06-10 13:22 UTCEPSS rescore
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  50. 2026-06-10 11:24 UTCEG score recompute
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  61. 2026-06-08 14:17 UTCEPSS rescore
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  63. 2026-06-08 10:28 UTCEG score recompute
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  66. 2026-06-07 22:17 UTCEG score recompute
  67. 2026-06-07 18:14 UTCEG score recompute
  68. 2026-06-07 15:25 UTCEPSS rescore
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  70. 2026-06-07 14:11 UTCEG score recompute
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  72. 2026-06-07 06:02 UTCEG score recompute
  73. 2026-06-07 01:58 UTCEG score recompute
  74. 2026-06-06 21:54 UTCEG score recompute
  75. 2026-06-06 17:50 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-42454?
CVE-2026-42454 is a critical vulnerability published on May 8, 2026. Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. Prior to version 2.1.0, all Docker container management endpoints in Termix interpolate the containerId URL path parameter and WebSocket message field directly into shell commands executed…
When was CVE-2026-42454 disclosed?
CVE-2026-42454 was first published in the National Vulnerability Database on May 8, 2026, with the most recent update on May 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42454 actively exploited?
CVE-2026-42454 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 47.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42454?
CVE-2026-42454 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-42454?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42454, 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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