CVE-2026-45033

GitHub Copilot CLI brings AI-powered coding assistance directly to your command line. Prior to 1.0.43, a security vulnerability has been identified in GitHub Copilot CLI where a malicious bare git repository nested inside a project directory can achieve arbitrary code execution when the agent performs git operations. By exploiting git's automatic bare repository discovery during directory traversal, an attacker can set core.fsmonitor or other executable config keys to run arbitrary commands without user awareness or approval. The vulnerability arises because git's core.fsmonitor config key (and 15+ similar keys such as core.hookspath, diff.external, merge.tool, etc.) can specify arbitrary shell commands that git will execute as part of normal operations like status, diff, or rev-parse. This vulnerability is fixed in 1.0.43.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/github/copilot-cli/security/advisories/GHSA-9ccr-r5hg-74gf	Exploit Mitigation Vendor Advisory
https://github.com/github/copilot-cli/security/advisories/GHSA-9ccr-r5hg-74gf	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:github:copilot-cli:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-05-13 16:17

Updated : 2026-06-17 10:51

NVD link : CVE-2026-45033

Mitre link : CVE-2026-45033

CVE.ORG link : CVE-2026-45033

JSON object : View

Products Affected

github

copilot-cli

CWE

CWE-696

Incorrect Behavior Order

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