CVE-2026-19039

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM 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(medium)
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
51%
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 15× in last 7d / 75× 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 125 total refreshes for this CVE.

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

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 49.2% 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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