CVE-2026-44728

Improper Control of Generation of Code when compiling specifically crafted malicious code with @babel/plugin-transform-modules-systemjs

State: Published
Severity: 8.2 High
Published: May 26, 2026
Updated: May 28, 2026
Reserved: May 7, 2026

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Description

Babel is a compiler for writing next generation JavaScript. From 7.12.0 to before 7.29.4 and 8.0.0-alpha.13, using Babel to compile code that was specifically crafted by an attacker can cause Babel to generate output code that executes arbitrary code. This vulnerability is fixed in 7.29.4 and 8.0.0-alpha.13.

Scores

CVSS	Score	Vector	Source
3.1	8.2 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-94 Improper Control of Generation of Code ('Code Injection')
CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')

Affected Products

Product	Versions
babelbabel	>= 7.12.0, < 7.29.4Affected >= 8.0.0-alpha.0, < 8.0.0-alpha.13Affected
plugin-transform-modules-systemjs@babel	>= 7.12.0, < 7.29.4Affected >= 8.0.0-alpha.0, < 8.0.0-alpha.13Affected

References

https://github.com/babel/babel/security/advisories/GHSA-fv7c-fp4j-7gwp

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