GitHub Copilot 1.372.0 allows filesystem access outside of a workspace folder (without user approval) via a file-handler URI parameter to fetch_webpage. Therefore, exfiltration could occur if there is indirect prompt injection.

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Mon, 22 Jun 2026 14:45:00 +0000

Type Values Removed Values Added
Title Filesystem Exfiltration via Unauthorized File-Handler URI in GitHub Copilot
Weaknesses CWE-200
CWE-284

Mon, 22 Jun 2026 13:45:00 +0000

Type Values Removed Values Added
Description GitHub Copilot 1.372.0 allows filesystem access outside of a workspace folder (without user approval) via a file-handler URI parameter to fetch_webpage. Therefore, exfiltration could occur if there is indirect prompt injection.
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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-06-22T13:38:54.583Z

Reserved: 2025-11-28T00:00:00.000Z

Link: CVE-2025-66389

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

Updated: 2026-06-22T14:30:05Z

Weaknesses