Vulnerability in Jd-Opensource Joysafeter
CVE-2026-109443
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/jd-opensource/JoySafeter/blob/12234a11a9d96acef85577afb1fa5682169d61… (technical-description)
- github.com/jd-opensource/JoySafeter/blob/12234a11a9d96acef85577afb1fa5682169d61… (technical-description)
- www.lasso.security/vulnerability-database/cve-2026-109443 (technical-description, exploit)
- www.vulncheck.com/advisories/joysafeter-through-1.0.0-authenticated-rce-via-cop… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109443?
- CVE-2026-109443 is a high-severity vulnerability in Jd-Opensource Joysafeter, classified under CWE-653. CVSS score: 8.8/10. Published 2026-10-20.
- How severe is CVE-2026-109443?
- High severity. CVSS v3 base score is 8.8 out of 10.