critical · CVSS v3 8.8 · CVSS v4 8.7 · EPSS 0.00705

CVE-2026-109443

JoySafeter through 1.0.0 contains a remote code execution vulnerability that allows authenticated users to run operating…

Description

JoySafeter through 1.0.0 contains a remote code execution vulnerability that allows authenticated users to run operating system commands via an unsandboxed execute tool in Copilot standard mode. Attackers can self-register, select standard mode in the WebSocket chat.start extension, and have the agent invoke subprocess.run with shell=True on the host to access other tenants' data and server secrets.

Scores

Severity
critical
CVSS v2
9
CVSS v3
8.8
CVSS v4
8.7
EPSS
0.00705

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