Path Traversal Vulnerability in esm.sh Content Delivery Network
CVE-2025-65025

8.2HIGH

Key Information:

Vendor

Esm-dev

Status
Esm.sh
Vendor
CVE Published:
19 November 2025

What is CVE-2025-65025?

The esm.sh CDN, used for modern web development, was found to be vulnerable to a path traversal issue during the extraction of NPM package tarballs. This vulnerability allows an attacker to create a malicious NPM package with specially crafted file paths, potentially enabling them to write files to arbitrary locations on the server. This situation arises as files can escape the designated extraction directory, posing significant risks to server integrity and security. The vulnerability has been addressed in esm.sh version 136.

Affected Version(s)

esm.sh < 136

References

https://github.com/esm-dev/esm.sh/security/advisories/GHS...
x_refsource_CONFIRM
https://github.com/esm-dev/esm.sh/commit/9d77b88c320733ff...
x_refsource_MISC

CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
Low
Integrity:
High
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-65025 : Path Traversal Vulnerability in esm.sh Content Delivery Network