CVEvulnerability

CVE-2025-66389

7.5 HIGH Published 2026-06-22 Modified 2026-10-12 Official page ↗

Status: Analyzed
Published: 2026-06-22
Last modified: 2026-10-12
Assigner: [email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0): 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weaknesses: CWE-552

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.

Affected configurations

• microsoft github copilot 1.372.0

Weakness · CWE (1)

CWE-552 Files or Directories Accessible to External Parties weakness

References

https://blindcyber.com/2025/10/28/copilot-fun/ Exploit, Third Party Advisory
https://github.com/microsoft/vscode-copilot-chat/ Product
https://github.com/microsoft/vscode/blob/03baef1008086ed4960042fa463e570072173bb5/src/vs/workbench/contrib/chat/electron-browser/tools/fetchPageTool.ts#L152 Product

CVE-2025-66389

Description

Affected configurations

Related

Weakness · CWE (1)

References