CVE-2026-81356 HIGH

CVE-2026-81356: Visual Studio Code Security Feature Bypass Vulnerability

Vendor Microsoft

Product Visual Studio Code

Weakness CWE-444

Published September 8, 2026

Last update September 29, 2026

View on NVD All CVEs

CVSS base score

8.2/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction Required

Confidentiality High

Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N/E:U/RL:O/RC:C

What the vulnerability does

01Description

Inconsistent interpretation of http requests ('http request/response smuggling') in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.

Key dates

02Disclosure timeline

September 8, 2026 CVE published

September 29, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-81356 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/444.html AskarLabs — CWE-444 write-up Inconsistent Interpretation of HTTP Requests (Request Smuggling)