@babel/plugin-transform-modules-systemjs generates arbitrary code when compiling malicious input

Description

Using Babel to compile code that was specifically crafted by an attacker can cause Babel to generate output code that executes arbitrary code.

Recommendation

Update the @babel/plugin-transform-modules-systemjs package to the latest compatible version. Followings are version details:

• Affected version(s): **>= 8.0.0-alpha.0, <= 8.0.0-alpha.12

  >= 7.12.0, <= 7.29.3**

• Patched version(s): **8.0.0-alpha.13

  7.29.4**

References

• GHSA-fv7c-fp4j-7gwp
• CVE-2026-44728
• CWE-843
• CWE-94
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6

Related Issues

• Babel vulnerable to arbitrary code execution when compiling specifically crafted malicious code - CVE-2023-45133
• FUXA Unauthenticated Remote Code Execution via Arbitrary File Write in Upload API - CVE-2026-25895
• next-mdx-remote affected by arbitrary code execution in React server-side rendering of untrusted MDX content - CVE-2026-0969
• Electerm runWidget has a path traversal that leads to arbitrary code execution - CVE-2026-43940

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How to Secure your NodeJs Express Javascript Application - part 1

How to Secure your NodeJs Express Javascript Application - part 2

10 Secure Coding Best Practices to Follow in Every Project

Tags:

npm

@babel/plugin-transform-modules-systemjs