What is CVE-2026-78462?

CVE-2026-78462 is a high-severity vulnerability in Microsoft Visual Studio Code, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.8/10. Published 2026-09-08.

How severe is CVE-2026-78462?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Microsoft Visual Studio Code

CVE-2026-78462

Authorization bypass through user-controlled key in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published 2026-09-08 · last modified 2026-09-11.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (54.7th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

References

Visual Studio Code Security Feature Bypass Vulnerability (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-78462?: CVE-2026-78462 is a high-severity vulnerability in Microsoft Visual Studio Code, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.8/10. Published 2026-09-08.
How severe is CVE-2026-78462?: High severity. CVSS v3 base score is 8.8 out of 10.