CVE-2026-49356
Last modified
CVE-2026-49356 is a low-severity vulnerability rated 3.6/10 on the CVSS scale. 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. EPSS estimates a 0.11% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Babel | Babel | < 7.29.6 | — |
| Babel | Babel | 8.0.0 | Alpha0 |
References
- https://github.com/babel/babel/security/advisories/GHSA-4x5r-pxfx-6jf8Mitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-49356?
How severe is CVE-2026-49356?
How do I fix CVE-2026-49356?
Are you affected by CVE-2026-49356?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST