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Description

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.

PUBLISHED Reserved 2026-04-03 | Published 2026-04-17 | Updated 2026-04-20 | Assigner GitHub_M




MEDIUM: 5.4CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-426: Untrusted Search Path

Product status

< 2.1.75
affected

References

github.com/...e-code/security/advisories/GHSA-5cwg-9f6j-9jvx

cve.org (CVE-2026-35603)

nvd.nist.gov (CVE-2026-35603)

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