CVE-2026-19039

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory (severity: LOW) published 2026-08-06. a secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 5.3Exploit: Elevated riskExposed: 0

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

A vulnerability was detected in Kino-Kafkaesque ssh-mcp-server up to 8ebbbb99b26f80ff6162fe00957c6dec73fbc5a5. Impacted is the function ssh_exec of the file src/index.ts of the component SSH Command Handler. Performing a manipulation of the argument host/username results in command injection. The attack requires a local approach. The actual existence of this vulnerability is currently in question. This product adopts a rolling release strategy to maintain continuous delivery. Therefore, version details for affected or updated releases cannot be specified. The project maintainer explains: "The intended threat model is that this MCP server is a local/trusted tool for an agent to execute commands over SSH, so callers already have meaningful execution capability through the exposed shell."

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity53% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
54%
KEV
Not listed

Published

August 6, 2026

Last Modified

August 12, 2026

Advisory Details (2)

Auto-updated Aug 6, 2026
No patch confirmed yet.
generic

Local Command Injection Vulnerability in KinoThe-Kafkaesque/ssh-mcp-server · Issue #3 · KinoThe-Kafkaesque/ssh-mcp-server · GitHub

https://github.com/KinoThe-Kafkaesque/ssh-mcp-server/issues/3#issuecomment-4319612623
generic

Local Command Injection Vulnerability in KinoThe-Kafkaesque/ssh-mcp-server · Issue #3 · KinoThe-Kafkaesque/ssh-mcp-server · GitHub

https://github.com/KinoThe-Kafkaesque/ssh-mcp-server/issues/3

Vendor Advisories for CVE-2026-19039(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 47× 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. 2026-08-21 06:04 UTCEG score recompute
  2. 2026-08-21 06:04 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 04:57 UTCEG score recompute
  5. 2026-08-20 04:57 UTCGHSA enrichment
  6. 2026-08-19 17:03 UTCEPSS rescore
  7. 2026-08-19 03:50 UTCEG score recompute
  8. 2026-08-19 03:50 UTCGHSA enrichment
  9. 2026-08-18 13:48 UTCEPSS rescore
  10. 2026-08-18 02:42 UTCEG score recompute
  11. 2026-08-18 02:42 UTCGHSA enrichment
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-17 01:35 UTCEG score recompute
  14. 2026-08-17 01:35 UTCGHSA enrichment
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 02:14 UTCEPSS rescore
  17. 2026-08-16 00:28 UTCEG score recompute
  18. 2026-08-16 00:28 UTCGHSA enrichment
  19. 2026-08-15 01:30 UTCEPSS rescore
  20. 2026-08-14 23:20 UTCGHSA enrichment
  21. 2026-08-13 22:13 UTCEG score recompute
  22. 2026-08-13 22:13 UTCGHSA enrichment
  23. 2026-08-13 22:00 UTCEPSS rescore
  24. 2026-08-12 21:06 UTCEG score recompute
  25. 2026-08-12 21:06 UTCGHSA enrichment
Show 22 more
  1. 2026-08-12 13:50 UTCEPSS rescore
  2. 2026-08-11 21:05 UTCEG score recompute
  3. 2026-08-11 21:05 UTCGHSA enrichment
  4. 2026-08-11 13:42 UTCEPSS rescore
  5. 2026-08-11 00:00 UTCEPSS rescore
  6. 2026-08-10 19:57 UTCGHSA enrichment
  7. 2026-08-09 18:50 UTCEG score recompute
  8. 2026-08-09 18:50 UTCGHSA enrichment
  9. 2026-08-09 13:46 UTCEPSS rescore
  10. 2026-08-08 17:43 UTCEG score recompute
  11. 2026-08-08 17:43 UTCGHSA enrichment
  12. 2026-08-08 16:37 UTCEPSS rescore
  13. 2026-08-07 16:36 UTCEG score recompute
  14. 2026-08-07 16:36 UTCGHSA enrichment
  15. 2026-08-06 15:29 UTCEG score recompute
  16. 2026-08-06 15:26 UTCNVD updateCVSS v4 → 1.9
  17. 2026-08-06 14:45 UTCEG score recompute
  18. 2026-08-06 14:41 UTCMITRE cvelistV5CVSS v4 → 4.8
  19. 2026-08-06 13:36 UTCEG score recompute
  20. 2026-08-06 13:36 UTCNVD updateCVSS v4 → 1.9
  21. 2026-08-06 13:09 UTCEG score recompute
  22. 2026-08-06 13:08 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19039?
CVE-2026-19039 is a medium vulnerability published on August 6, 2026. A vulnerability was detected in Kino-Kafkaesque ssh-mcp-server up to 8ebbbb99b26f80ff6162fe00957c6dec73fbc5a5. Impacted is the function ssh_exec of the file src/index.ts of the component SSH Command Handler. Performing a manipulation of the argument host/username results in command injection. The…
When was CVE-2026-19039 disclosed?
CVE-2026-19039 was first published in the National Vulnerability Database on August 6, 2026, with the most recent update on August 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19039 actively exploited?
CVE-2026-19039 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 46.0% of all scored CVEs.
What is the CVSS score of CVE-2026-19039?
CVE-2026-19039 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-19039?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19039, 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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