Vulnerability record · CVE-2025-65025 · published 19 November 2025

CVE-2025-65025: Esm.sh path traversal vulnerability

Esm · Esm.Sh

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.

9.8 CVSS 3.1 Critical EPSS 0.53% · top 57.3% CWE-22 · Path traversal

9.8CVSS 3.1 base score

0.53%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

3References, 2 tagged exploit

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Esm.Sh Esm

References

Link	Tags
https://github.com/esm-dev/esm.sh/commit/9d77b88c320733ff6689d938d85d246a3af9af16	Patch
https://github.com/esm-dev/esm.sh/security/advisories/GHSA-h3mw-4f23-gwpw	ExploitVendor Advisory
https://github.com/esm-dev/esm.sh/security/advisories/GHSA-h3mw-4f23-gwpw	ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-65025), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.