CVE-2026-109443
JoySafeter through 1.0.0 Authenticated RCE via Copilot Standard Mode Shell
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-653 |
| Vendor | jd-opensource |
| Product | joysafeter |
| Published | Oct 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
jd-opensource / JoySafeter
0 ≤ 1.0.0
References
lasso.security: https://www.lasso.security/vulnerability-database/cve-2026-109443 github.com: https://github.com/jd-opensource/JoySafeter/blob/12234a11a9d96acef85577afb1fa5682169d6171/backend/app/core/agent/backends/utils/command_executor.py#L110 github.com: https://github.com/jd-opensource/JoySafeter/blob/12234a11a9d96acef85577afb1fa5682169d6171/backend/app/services/copilot_service.py#L106 vulncheck.com: https://www.vulncheck.com/advisories/joysafeter-through-1.0.0-authenticated-rce-via-copilot-standard-mode-shell
Credits
Noy Pearl Michael Sromin Ophir Dror