High 8.8Published Oct 19, 2026

CVE-2026-109443JoySafeter through 1.0.0 Authenticated RCE via Copilot Standard Mode Shell

Updated under an hour ago (Oct 28, 2026, 5:30 AM ET)

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It affects jd-opensource JoySafeter. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.86%, higher than 58% of scored CVEs.

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Every CVE for jd-opensource JoySafeter

Exploited in the last 30 days

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: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-653
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.86% (percentile 58)
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 22, 2026
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

jd-opensource JoySafeter jd_opensource:joysafeter (from the name)	through 1.0.0	CNA record

References

References

https://www.lasso.security/vulnerability-database/cve-2026-109443	technical-description, exploit
https://github.com/jd-opensource/JoySafeter/blob/12234a11a9d96acef85577afb1fa5682169d6171/backend/app/core/agent/backends/utils/command_executor.py#L110	technical-description
https://github.com/jd-opensource/JoySafeter/blob/12234a11a9d96acef85577afb1fa5682169d6171/backend/app/services/copilot_service.py#L106	technical-description
https://www.vulncheck.com/advisories/joysafeter-through-1.0.0-authenticated-rce-via-copilot-standard-mode-shell	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.