{"id":"CVE-2026-46406","revision":"63de62f9bb1d4b4db6c4d5566298f0e9","records":[{"revision":"63de62f9bb1d4b4db6c4d5566298f0e9","observedAt":"2026-10-25T12:17:14.897+00:00","statement":{"source":"nvd","id":"CVE-2026-46406","aliases":[],"title":"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 w…","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":"2026-06-29T15:16:41.033+00:00","modifiedAt":"2026-06-30T17:30:26.61+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":4.4,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H","score":6.1,"severity":"MEDIUM"}],"references":["https://github.com/anthropics/claude-code/security/advisories/GHSA-4vp2-6q8c-pvq2"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-46406","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-59","CWE-200","CWE-377"],"productCriteria":["cpe:2.3:a:anthropic:claude_code:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-06-29T15:16:41.033","lastModified":"2026-06-30T17:30:26.610"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-46406","identifiers":["CVE-2026-46406"]},"retained":false,"historicalAffected":[]}],"coverage":[]}