What is CVE-2026-40376?

CVE-2026-40376 is a high-severity vulnerability in Microsoft Visual Studio Code, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2026-06-09.

How severe is CVE-2026-40376?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in Microsoft Visual Studio Code

CVE-2026-40376

Improper input validation in Visual Studio Code allows an unauthorized attacker to elevate privileges over a network.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.007 (48.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Microsoft Visual Studio Code — versions 1.0.0
Microsoft Visual_studio_code

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-40376?: CVE-2026-40376 is a high-severity vulnerability in Microsoft Visual Studio Code, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2026-06-09.
How severe is CVE-2026-40376?: High severity. CVSS v3 base score is 7.5 out of 10.