{"id":"CVE-2026-46406","revision":"b87f0f617e954217bd6794627b70bbd9","records":[{"revision":"b87f0f617e954217bd6794627b70bbd9","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-46406","aliases":[],"title":"Claude Code: Insecure Temporary File in /copy Command Enables Response Disclosure and Symlink-Based File Write","description":"Claude Code is an agentic coding tool.  From 2.1.59 until 2.1.128, the Claude Code /copy command wrote responses to a hardcoded, predictable path (/tmp/claude/response.md) without UID isolation, randomness, or symlink protection. The file was created world-readable (0644) in a world-traversable directory (0755), allowing any local user to read a privileged user's Claude response, which could contain secrets or credentials. Additionally, because the path was static and predictable, a local attacker could pre-create the directory and plant a symlink at the expected file path, causing the privileged process to follow the symlink and overwrite an attacker-chosen file with the response text. Exploiting this required a local unprivileged user on the same system and a privileged user to run the /copy command. This vulnerability is fixed in 2.1.128.","state":0,"publishedAt":"2026-06-29T14:03:14.683+00:00","modifiedAt":"2026-06-29T15:26:11.153+00:00","affected":[{"ecosystem":"Vendor product","name":"claude-code","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"anthropics\",\n                    \"product\": \"claude-code\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 2.1.59, < 2.1.128\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N","score":4.4,"severity":"MEDIUM"}],"references":["https://github.com/anthropics/claude-code/security/advisories/GHSA-4vp2-6q8c-pvq2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-46406","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-46406","identifiers":["CVE-2026-46406"]},"retained":false,"historicalAffected":[]}],"coverage":[]}