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.

CVSS v3 7.3 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.3 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:anthropic:claude_code:*:*:*:*:*:node.js:*:*

cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

History

22 Apr 2026, 18:45

Type	Values Removed	Values Added
References	~~() https://github.com/anthropics/claude-code/security/advisories/GHSA-5cwg-9f6j-9jvx -~~	() https://github.com/anthropics/claude-code/security/advisories/GHSA-5cwg-9f6j-9jvx - Vendor Advisory
CPE		cpe:2.3:a:anthropic:claude_code::::::node.js::* cpe:2.3:o:microsoft:windows:-:::::::*
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.3
First Time		Microsoft Anthropic Anthropic claude Code Microsoft windows

17 Apr 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-17 21:16

Updated : 2026-04-22 18:45

NVD link : CVE-2026-35603

Mitre link : CVE-2026-35603

CVE.ORG link : CVE-2026-35603

JSON object : View

Products Affected

anthropic

claude_code

microsoft

windows

CWE

CWE-426

Untrusted Search Path

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