Is CVE-2026-43990 actively exploited?

No active exploitation of CVE-2026-43990 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-43990 be exploited remotely?

No. CVE-2026-43990 requires local access to exploit.

What is the CVSS score of CVE-2026-43990?

CVE-2026-43990 has a CVSS score of 8.4 (HIGH).

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HIGH

CVE-2026-43990

CWE-77Published: May 12, 2026· Updated: May 13, 2026

8.4

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:5.0th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-43990 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.4.