This vulnerability (CVE-2026-57101) in Microsoft Visual Studio Code is classified as CWE-79, indicating improper neutralization of input during web page generation, commonly known as cross-site scripting (XSS). The flaw allows an unauthorized local attacker to bypass security features by injecting malicious input that is not properly sanitized. The CVSS 3.1 base score is 7.1, reflecting high severity with local attack vector, low attack complexity, no privileges required, and user interaction needed. Microsoft has published an official fix for this vulnerability.

Successful exploitation of this vulnerability could allow a local attacker to bypass security features in Visual Studio Code, potentially leading to the execution of malicious scripts in the context of the application. This could compromise confidentiality and integrity of data handled by the application. There is no indication of availability impact or known exploits in the wild at this time.

An official fix is available from Microsoft. Users should apply the patch provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57101 to remediate this vulnerability.