{"id":"CVE-2023-45133","aliases":["GHSA-67hx-6x53-jw92"],"url":"https://o3.security/vulnerability/CVE-2023-45133","summary":"Babel vulnerable to arbitrary code execution when compiling specifically crafted malicious code","details":"Babel is a compiler for writingJavaScript. In `@babel/traverse` prior to versions 7.23.2 and 8.0.0-alpha.4 and all versions of `babel-traverse`, using Babel to compile code that was specifically crafted by an attacker can lead to arbitrary code execution during compilation, when using plugins that rely on the `path.evaluate()`or `path.evaluateTruthy()` internal Babel methods. Known affected plugins are `@babel/plugin-transform-runtime`; `@babel/preset-env` when using its `useBuiltIns` option; and any \"polyfill provider\" plugin that depends on `@babel/helper-define-polyfill-provider`, such as `babel-plugin-polyfill-corejs3`, `babel-plugin-polyfill-corejs2`, `babel-plugin-polyfill-es-shims`, `babel-plugin-polyfill-regenerator`. No other plugins under the `@babel/` namespace are impacted, but third-party plugins might be. Users that only compile trusted code are not impacted. The vulnerability has been fixed in `@babel/traverse@7.23.2` and `@babel/traverse@8.0.0-alpha.4`. Those who cannot upgrade `@babel/traverse` and are using one of the affected packages mentioned above should upgrade them to their latest version to avoid triggering the vulnerable code path in affected `@babel/traverse` versions: `@babel/plugin-transform-runtime` v7.23.2, `@babel/preset-env` v7.23.2, `@babel/helper-define-polyfill-provider` v0.4.3, `babel-plugin-polyfill-corejs2` v0.4.6, `babel-plugin-polyfill-corejs3` v0.8.5, `babel-plugin-polyfill-es-shims` v0.10.0, `babel-plugin-polyfill-regenerator` v0.5.3.","published":"2023-10-12T16:17:08.624Z","modified":"2026-07-15T01:48:53.607307513Z","cvss":{"score":9.3,"severity":"CRITICAL","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@babel/traverse","fixedVersion":"7.23.2"},{"ecosystem":"npm","name":"@babel/traverse","fixedVersion":"8.0.0-alpha.4"},{"ecosystem":"npm","name":"babel-traverse","fixedVersion":null}],"fix":{"url":"https://github.com/babel/babel/commit/b13376b346946e3f62fc0848c1d2a23223314c82","label":"babel/babel@b13376b"},"references":[{"type":"WEB","url":"https://github.com/babel/babel/releases/tag/v7.23.2"},{"type":"WEB","url":"https://github.com/babel/babel/releases/tag/v8.0.0-alpha.4"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/10/msg00026.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45133.json"},{"type":"ADVISORY","url":"https://github.com/babel/babel/security/advisories/GHSA-67hx-6x53-jw92"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-45133"},{"type":"ADVISORY","url":"https://www.debian.org/security/2023/dsa-5528"},{"type":"FIX","url":"https://github.com/babel/babel/commit/b13376b346946e3f62fc0848c1d2a23223314c82"},{"type":"FIX","url":"https://github.com/babel/babel/pull/16033"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:48:53.607307513Z"}}