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Vulnerability details

8.2/10
CVSS 3.1
GHSA-fv7c-fp4j-7gwp
resolved Published 2026-05-08 Updated 2026-06-08
GitHub Advisory
Vulnerability Data from Dependency-Track
Affected versions
Score
8.2 CVSS 3.1 GITHUB CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Description
### Impact Using Babel to compile code that was specifically crafted by an attacker can cause Babel to generate output code that executes arbitrary code. Known affected plugins are: - `@babel/plugin-transform-modules-systemjs` - `@babel/preset-env` when using the [`modules: "systemjs"` option](https://babel.dev/docs/babel-preset-env#modules), as it delegates to `@babel/plugin-transform-modules-systemjs` No other plugins under the `@babel` namespace are impacted. **Users that only compile trusted code are not impacted.** ### Patches The vulnerability has been fixed in `@babel/plugin-transform-modules-systemjs@7.29.4`. Babel also released `@babel/preset-env@7.29.5`, updating its `@babel/plugin-transform-modules-systemjs` dependency, to simplify forcing the update if you are using `@babel/preset-env` directly. ### Workarounds - Pin `@babel/parser` to v7.11.5. The downgrade will completely disable string module name parsing, but it would also disable other new language features and the build pipeline may fail as a result. Only do so if you are working on a legacy codebase and can not upgrade `@babel/plugin-transform-modules-systemjs` to v7.29.4. - Do not use the `modules: "systemjs"` option, migrate the codebase to native ES Modules or any other module formats. ### Credits Babel thanks Daniel Cervera for reporting the vulnerability.
Same vulnerability as
CVE-2026-44728 resolved according to EUVD-2026-31946
Analysis Read only Updated 2026-10-26
The analysis can only be edited by the BlueMind security teams: log in.

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