Vulnerability · Published May 12, 2026 · Assigned by GitHub_M

CVE-2026-43991JunoClaw: plugin-shell shell-injection bypass via substring blocklist

High 8.4

In plain English

A high-severity OS command injection in junoclaw from Dragonmonk111. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).

Severity (CVSS 3.1)8.4High

Exploit odds (30 days)0.2%top 93.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

JunoClaw is an agentic AI platform built on Juno Network. Prior to 0.x.y-security-1, substring-based blocklist in plugin-shell's command-safety check could be bypassed by adversarial argument constructions, allowing unauthorized command execution on the host when combined with the companion advisory. Pre-patch, the check was applied to the raw command string rather than the parsed first token. This vulnerability is fixed in 0.x.y-security-1.

Affected products (as reported)

Vendor	Product	Versions
Dragonmonk111	junoclaw	< v0.x.y-security-1

Weakness: CWE-78, CWE-184 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/Dragonmonk111/junoclaw/security/advisories/GHSA-fvq5-79h6-952c x_refsource_CONFIRM
https://github.com/Dragonmonk111/junoclaw/commit/2bc54f6 x_refsource_MISC