Command injection in GitHub Copilot Plugin for JetBrains IDEs - CVE-2026-83953
Published: November 11, 2026
Vulnerability identifier: #VU165711
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-83953
CWE-ID: CWE-77
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose information by reading files without authorization.
The vulnerability exists due to improper neutralization of special elements used in a command in the GitHub Copilot Plugin for JetBrains IDEs when processing input used to construct commands. A local user can inject command elements to gain unauthorized read access to the local file system.
Affected software
GitHub Copilot Plugin for JetBrains IDEs
How to mitigate CVE-2026-83953
Install security update from vendor's website.
GitHub Copilot Plugin for JetBrains IDEs - update to 1.17.0-251