CVE-2026-35603 : faille élevée anthropic claude code (CVSS 7.3)

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.

Sévérité

Élevée (CVSS 7.3)

Vecteur CVSS

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Exploitation active

Non signalée par la CISA

Publication

17 avr. 2026

Dernière mise à jour

17 juin 2026

• anthropic claude code

• Fiche CVE-2026-35603 sur le NVD (NIST)
• github.com/anthropics/claude…