CVE-2026-109443: high-severity vulnerability in jd-opensource JoySafeter
JoySafeter through 1.0.0 Authenticated RCE via Copilot Standard Mode Shell
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.7epss 0.9%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
jd-opensource · JoySafeterpublic PoCs found — 1
cve_referencewww.lasso.security/vulnerability-database/cve-2026-109443unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://github.com/jd-opensource/JoySafeter/blob/12234a11a9d96acef85577afb1fa5682169d6171/backend/app/core/agent/backends/utils/command_executor.py#L110https://github.com/jd-opensource/JoySafeter/blob/12234a11a9d96acef85577afb1fa5682169d6171/backend/app/services/copilot_service.py#L106https://www.lasso.security/vulnerability-database/cve-2026-109443https://www.vulncheck.com/advisories/joysafeter-through-1.0.0-authenticated-rce-via-copilot-standard-mode-shell