CVE-2023-45133
Babel vulnerable to arbitrary code execution when compiling specifically crafted malicious code
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
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/[email protected]` and `@babel/[email protected]`. 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.
Timeline
ID reserved
By GitHub_M
- 8 days later
· 8 days later
Published
- 16 months later
· 16 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Critical9.4 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.53% · top 55% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.4.
Weakness
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- npm@babel/traverseGHSA-67hx-6x53-jw92 (opens in a new tab)
- npmbabel-traverseGHSA-67hx-6x53-jw92 (opens in a new tab)
References (7)
- https://github.com/babel/babel/security/advisories/GHSA-67hx-6x53-jw92 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/babel/babel/pull/16033 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/babel/babel/commit/b13376b346946e3f62fc0848c1d2a23223314c82 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/babel/babel/releases/tag/v7.23.2 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/babel/babel/releases/tag/v8.0.0-alpha.4 (opens in a new tab)x_refsource_MISCx_transferred
- https://www.debian.org/security/2023/dsa-5528 (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/10/msg00026.html (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-67hx-6x53-jw92 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-45133)Record last updated .