{"id":"CVE-2025-64755","aliases":[],"url":"https://o3.security/vulnerability/CVE-2025-64755","summary":"@anthropic-ai/claude-code has Sed Command Validation Bypass that Allows Arbitrary File Writes","details":"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. \n\nUsers on standard Claude Code auto-update will have received this fix automatically. Users performing manual updates are advised to update to the latest version.\n\nThank you to Adam Chester - SpecterOps for reporting this issue!","published":"2025-11-20T21:28:08Z","modified":"2025-11-21T15:32:13Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@anthropic-ai/claude-code","fixedVersion":"2.0.31"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/anthropics/claude-code/security/advisories/GHSA-7mv8-j34q-vp7q"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-64755"},{"type":"PACKAGE","url":"https://github.com/anthropics/claude-code"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2025-11-21T15:32:13Z"}}