{"id":"CVE-2026-35603","summary":"Claude Code: Insecure System-Wide Configuration Loading Enables Local Privilege Escalation on Windows","details":"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.","aliases":["GHSA-5cwg-9f6j-9jvx"],"modified":"2026-07-15T01:49:07.256294123Z","published":"2026-04-17T20:38:49.901Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-426"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35603.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35603.json"},{"type":"ADVISORY","url":"https://github.com/anthropics/claude-code/security/advisories/GHSA-5cwg-9f6j-9jvx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35603"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/anthropics/claude-code","events":[{"introduced":"0"},{"fixed":"2dc1e697836e94f3e9b7b8f19e6fb4a3622e3cca"}],"database_specific":{"cpe":"cpe:2.3:a:anthropic:claude_code:*:*:*:*:*:node.js:*:*","extracted_events":[{"introduced":"0"},{"fixed":"2.1.75"}],"source":["AFFECTED_FIELD","CPE_RANGE"]}}],"versions":["v2.1.74","v2.1.73","v2.1.72","v2.1.71","v2.1.70","v2.1.69","v2.1.68","v2.1.66","v2.1.63","v2.1.62","v2.1.61","v2.1.59","v2.1.58","v2.1.56","v2.1.55","v2.1.53","v2.1.52","v2.1.51","v2.1.50","v2.1.49","v2.1.47","v2.1.45","v2.1.44","v2.1.42","v2.1.41","v2.1.39","v2.1.38","v2.1.37","v2.1.36","v2.1.34","v2.1.33","v2.1.32","v2.1.31","v2.1.30","v2.1.29","v2.1.12","v2.1.27","v2.1.25","v2.1.23","v2.1.22","v2.1.21","v2.1.20","v2.1.19","v2.1.17","v2.1.16","v2.1.15","v2.1.14","v2.1.11","v2.1.9","v2.1.7","v2.1.6","v2.1.5","v2.1.4","v2.1.3","v2.1.2","v2.1.1","v2.0.76","v2.1.0","v2.0.74","v2.0.73"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-35603.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}