CVE-2026-45482

Microsoft Visual Studio Code CoPilot Chat Security Feature Bypass Vulnerability

At a glance

Severity: HIGH 8.4
EPSS: EPSS 0.34 % · percentile 28 (2026-10-27)
State: PUBLISHED
Published: 2026-06-09
Updated: 2026-09-24
Assigner: microsoft
NVD status: Modified

Description

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 8.4	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft
CVSS 3.1	HIGH 8.4	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · secure@microsoft.com (Secondary)

Weaknesses (CWE)

CWE-22

European references

ENISA EUVD · EUVD-2026-35547
GCVE · GCVE-0-2026-45482

CERT-FR advisories

CERTFR-2026-AVI-0731 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:microsoft:visual_studio_code:*:*:*:*:*:*:*:* < 1.123.2

Affected products

Product	Versions
Microsoft · Microsoft Visual Studio Code CoPilot Chat Extension	affected 0.27.0 < 1.123.2

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45482

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD