RCE in @Babel Plugin-Transform-Modules-Systemjs
CVE-2026-44728
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (6.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Affected products
- @Babel Plugin-Transform-Modules-Systemjs — versions >= 7.12.0, < 7.29.4, >= 8.0.0-alpha.0, < 8.0.0-alpha.13
- Babel — versions >= 8.0.0-alpha.0, < 8.0.0-alpha.13, >= 7.12.0, < 7.29.4, 8.0.0
Weakness classification (CWE)
References
- github.com/babel/babel/security/advisories/GHSA-fv7c-fp4j-7gwp (Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-44728?
- CVE-2026-44728 is a high-severity vulnerability in @Babel Plugin-Transform-Modules-Systemjs, classified under Code Injection. CVSS score: 8.2/10. Published 2026-05-26.
- How severe is CVE-2026-44728?
- High severity. CVSS v3 base score is 8.2 out of 10.