Babel: Arbitrary File Read via sourceMappingURL Comment in @babel/core
CVE-2026-49356 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-49356, released June 22, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| agama-web-ui · opensuse-leap 16.0 | 17+673.b97ba64d6-160000.12.1 | OPENSUSE-SU-2026:21448-1 | Jul 27, 2026 |
| node-babel7 · Debian 14 | 8.0.4+ds1+~cs177.303.116-2 | DEBIAN-CVE-2026-49356 | Jun 22, 2026 |
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