Command Injection Affecting @github/copilot package, versions <0.0.423
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-GITHUBCOPILOT-15468228
- published12 Mar 2026
- disclosed6 Mar 2026
- creditUnknown
Introduced: 6 Mar 2026
NewCVE-2026-29783 (opens in a new tab)How to fix?
Upgrade @github/copilot to version 0.0.423 or higher.
Overview
@github/copilot is a GitHub Copilot CLI brings the power of Copilot coding agent directly to your terminal.
Affected versions of this package are vulnerable to Command Injection via crafted bash parameter expansion patterns in the shell command assessment process. An attacker can execute arbitrary commands on the user's system by injecting malicious shell expansions through repository content, compromised server responses, or crafted user instructions.