CVE-2026-35603

Claude Code is an agentic coding tool. In versions prior to 2.1.75 on Windows, Claude Code loaded the system-wide default configuration from C:\ProgramData\ClaudeCode\managed-settings.json without validating directory ownership or access permissions. Because the ProgramData directory is writable by non-administrative users by default and the ClaudeCode subdirectory was not pre-created or access-restricted, a low-privileged local user could create this directory and place a malicious configuration file that would be automatically loaded for any user launching Claude Code on the same machine. Exploiting this would have required a shared multi-user Windows system and a victim user to launch Claude Code after the malicious configuration was placed. This issue has been fixed on version 2.1.75.

The following products are affected by CVE-2026-35603 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-35603.

URL	Resource
https://github.com/anthropics/claude-code/security/advisories/GHSA-5cwg-9f6j-9jvx