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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2025-59342 Detail

Description

esm.sh is a nobuild content delivery network(CDN) for modern web development. In 136 and earlier, a path-traversal flaw in the handling of the X-Zone-Id HTTP header allows an attacker to cause the application to write files outside the intended storage location. The header value is used to build a filesystem path but is not properly canonicalized or restricted to the application’s storage base directory. As a result, supplying ../ sequences in X-Zone-Id causes files to be written to arbitrary directories.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  GitHub, Inc.
CVSS-BT 5.5 MEDIUM
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/esm-dev/esm.sh/blob/main/server/router.go#L116 GitHub, Inc.
https://github.com/esm-dev/esm.sh/blob/main/server/router.go#L411 GitHub, Inc.
https://github.com/esm-dev/esm.sh/security/advisories/GHSA-g2h5-cvvr-7gmw GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-24 Path Traversal: '../filedir' GitHub, Inc.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2025-59342
NVD Published Date:
09/17/2025
NVD Last Modified:
09/17/2025
Source:
GitHub, Inc.