Description
Babel is a compiler for writing next generation JavaScript. Prior to 8.0.0-rc.6 and 7.29.6, @babel/core affected by an arbitrary file read via a sourceMappingURL comment. Using @babel/core to compile maliciously crafted code can allow an attacker to read any source map from the system that is running Babel, if the attacker controls the input source code, can read the output source code, and knows the path of the source map file that they want to read. This vulnerability is fixed in 8.0.0-rc.6 and 7.29.6.
Severity (CVSS)
| Base score | 3.2 |
|---|---|
| Severity | Low |
| Version | CVSS 3.1 |
| Vector | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N |
| Provided by | CNA |
Weaknesses
- CWE-22 — CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- CWE-200 — CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Affected products
| Vendor | Product | Versions |
|---|---|---|
| babel | babel | >= 8.0.0-alpha.0, < 8.0.0-rc.5; < 7.29.6 |
References
- https://github.com/babel/babel/security/advisories/GHSA-4x5r-pxfx-6jf8 (x_refsource_CONFIRM)
Generated from the official CVE List on 23 Jun 2026 10:05 UTC.