{"id":"CVE-2025-66032","aliases":[],"url":"https://o3.security/vulnerability/CVE-2025-66032","summary":"Claude Code Command Validation Bypass Allows Arbitrary Code Execution","details":"Due to errors in parsing shell commands related to $IFS and short CLI flags, it was possible to bypass the Claude Code read-only validation and trigger arbitrary code execution. Reliably exploiting this requires the ability to add untrusted content into a Claude Code context window.\n\nUsers on standard Claude Code auto-update have received this fix already. Users performing manual updates are advised to update to the latest version.\n\nThank you to [RyotaK](hxxps://ryotak.net) from [GMO Flatt Security Inc.](hxxps://flatt.tech/en/) for reporting this issue!","published":"2025-12-03T16:27:19Z","modified":"2025-12-05T12:27:53.035426Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@anthropic-ai/claude-code","fixedVersion":"1.0.93"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/anthropics/claude-code/security/advisories/GHSA-xq4m-mc3c-vvg3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66032"},{"type":"PACKAGE","url":"https://github.com/anthropics/claude-code"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2025-12-05T12:27:53.035426Z"}}