CVE-2025-65025

🔴 HIGH

esm.sh is a nobuild content delivery network(CDN) for modern web development. Prior to version 136, the esm.sh CDN service is vulnerable to path traversal during NPM package tarball extraction. An att...

Published
Nov 19, 2025
Last Modified
Nov 20, 2025
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esm.sh is a nobuild content delivery network(CDN) for modern web development. Prior to version 136, the esm.sh CDN service is vulnerable to path traversal during NPM package tarball extraction. An attacker can craft a malicious NPM package containing specially crafted file paths (e.g., package/../../tmp/evil.js). When esm.sh downloads and extracts this package, files may be written to arbitrary locations on the server, escaping the intended extraction directory. This issue has been patched in version 136.

CVSS Scores

CVSS 3.1 8.2
8.2
HIGH
CVSS 2.0 8.2

Additional Information

Source
security-advisories@github.com
State
Awaiting analysis

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