CVE-2026-43990

HIGHNVD 8.48.4—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.4 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 95% 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
8.4
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.4Exploit: NoneExposed: 0

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

JunoClaw is an agentic AI platform built on Juno Network. Prior to 0.x.y-security-1, plugin-shell's run_command wrapped every agent-supplied command in 'sh -c' / 'cmd /C' and passed the full argument string to the shell's parser, allowing shell metacharacters in agent-supplied arguments to be interpreted as command syntax. This vulnerability is fixed in 0.x.y-security-1.

CVSS v3
8.4
EG Score
8.4(medium)
EPSS
4.7%
KEV
Not listed

Published

May 12, 2026

Last Modified

May 13, 2026

Advisory Details (3)

Auto-updated May 12, 2026
Patch available. Sources: github.
github Patch Available

plugin-shell shell-metacharacter injection via shell wrapper · Advisory · Dragonmonk111/junoclaw · GitHub

https://github.com/Dragonmonk111/junoclaw/security/advisories/GHSA-gpvm-3chf-2649
generic

Release v0.x.y-security-1 -- five walls · Dragonmonk111/junoclaw · GitHub

https://github.com/Dragonmonk111/junoclaw/releases/tag/v0.x.y-security-1
generic

security(plugin-shell): C-1/C-2 unsafe-shell Cargo gate + allowlist-only · Dragonmonk111/junoclaw@2bc54f6 · GitHub

https://github.com/Dragonmonk111/junoclaw/commit/2bc54f6

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 38× 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 105 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-43990?
CVE-2026-43990 is a high vulnerability published on May 12, 2026. JunoClaw is an agentic AI platform built on Juno Network. Prior to 0.x.y-security-1, plugin-shell's run_command wrapped every agent-supplied command in 'sh -c' / 'cmd /C' and passed the full argument string to the shell's parser, allowing shell metacharacters in agent-supplied arguments to be…
When was CVE-2026-43990 disclosed?
CVE-2026-43990 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43990 actively exploited?
CVE-2026-43990 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43990?
CVE-2026-43990 has a CVSS v3 base score of 8.4 (NVD).
How do I remediate CVE-2026-43990?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43990, 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.

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