CVE-2026-109443 — JoySafeter through 1.0.0 Authenticated RCE via Copilot Standard Mode Shell
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 Copil…
Published: 2026-10-20 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7