CVE-2026-107332 - Insecure default file permissions on cached credentials in AWS Toolkit for Visual Studio Code

Bulletin ID: 2026-129-AWS Scope: AWS Content Type: Important (requires attention) Publication Date: 10/08/2026 10:30 PM PDT Description: AWS Toolkit for Visual Studio Code is an open source extension that lets developers work with AWS services, including Amazon CodeCatalyst, from within Visual Studio Code. We identified CVE-2026-107332, an issue in the CodeCatalyst connection handler. When a user connected to a CodeCatalyst Dev Environment, the extension cached the user's CodeCatalyst bearer token to a file with world-readable permissions and did not remove the file after the session ended. A local user or process on the same machine with access to the file system was able to read this file and obtain the bearer token. Impacted versions: Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.