High severity8.3NVD Advisory· Published Nov 10, 2026· Updated Nov 10, 2026

CVE-2026-121664

Description

Improper neutralization of input during web page generation ('cross-site scripting') in Visual Studio Code allows an unauthorized attacker to execute code over a network.

Affected products

Microsoft/Visual Studio Codellm-fuzzy

Patches

Vulnerability mechanics

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-121664nvd

News mentions

Microsoft November 2026 Patch Tuesday Fixes 1,093 Vulnerabilities, Including Outlook Zero-Day
Cyber Security News · Nov 10, 2026

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