Path Traversal in Microsoft Visual Studio Code Copilot Chat Extension

CVE-2026-45482

Improper limitation of a pathname to a restricted directory ('path traversal') in GitHub Copilot and Visual Studio Code allows an unauthorized attacker to bypass a security feature locally.

Vulnerability class: Path Traversal (Directory Traversal)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (33.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-45482: held from 0.003 to 0.004.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-45482?
CVE-2026-45482 is a high-severity vulnerability in Microsoft Visual Studio Code Copilot Chat Extension, classified under Path Traversal. CVSS score: 8.4/10. Published 2026-06-09.
How severe is CVE-2026-45482?
High severity. CVSS v3 base score is 8.4 out of 10.