CVE-2026-44594
High · 7.5CVSS
7.5
EPSS
0.5%
Published
May 28, 2026
CISA due date
—
The record
esm.sh is a no-build content delivery network (CDN) for web development. In 137 and earlier, a Local File Inclusion (LFI) vulnerability exists in the esbuild plugin's handling of the browser field in package.json. An attacker can publish an npm package that causes the server to read and return arbitrary files from the host filesystem during the build process.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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