{"cve":"CVE-2025-64755","nvd":{"published":"2025-11-21T02:15:43.917","modified":"2026-10-18T20:10:00.110","status":"Analyzed","description":"Claude Code is an agentic coding tool. Prior to version 2.0.31, due to an error in sed command parsing, it was possible to bypass the Claude Code read-only validation and write to arbitrary files on the host system. This issue has been patched in version 2.0.31.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":8.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-78"],"references":["https://github.com/anthropics/claude-code/security/advisories/GHSA-7mv8-j34q-vp7q"],"products":["anthropic:claude_code"],"source":"nvd","synced_at":"2026-10-19T22:16:02.354564667+00:00"},"epss":{"cve":"CVE-2025-64755","score":0.0062,"percentile":0.49378,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-7mv8-j34q-vp7q","url":"https://osv.dev/vulnerability/GHSA-7mv8-j34q-vp7q","summary":"@anthropic-ai/claude-code has Sed Command Validation Bypass that Allows Arbitrary File Writes","modified":"2025-11-21T15:32:13Z","packages":[{"ecosystem":"npm","name":"@anthropic-ai/claude-code","purl":"pkg:npm/%40anthropic-ai/claude-code","ranges":["<2.0.31"],"fixed":["2.0.31"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}