Summary
Impact: Security Feature Bypass. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
How could an attacker exploit this vulnerability?
An attacker could convince a user to open a specially crafted Visual Studio Code workspace and click an attacker-controlled notification. Successful exploitation could bypass Workspace Trust protections and allow commands to run in the context of the user without the user granting trust. The attacker does not require authentication.
What security feature could be bypassed by successfully exploiting this vulnerability?
Successful exploitation could allow an untrusted workspace to apply settings that should be blocked by Visual Studio Code's Workspace Trust protections. The user must open the attacker-controlled workspace.
Security updates
1.145.3 — https://code.visualstudio.com/updates/v1_145
Vulnerabilities 1
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High 8.8
Visual Studio Code Security Feature Bypass Vulnerability
Trust boundary violation in Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.
Revision history
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#1
Information published.
References
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CVE-2026-121665 Visual Studio Code Security Feature Bypass Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-121665
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss