CVE•Published 2025-09-17•1 article on news•6 live references•NVD data

CVE-2025-59342

Vulnerability data via CVEDB (Shodan)

CVSS v3.1

5.5

MEDIUM

EPSS percentile

Exploit Prediction Scoring System · top 15% of all CVEs

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. Version 136.1 contains a patch.

Timeline

Published 2025-09-17

External references

NVD MITRE Exploit-DB Sploitus trickest/cve VulnCheck

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Shodan report

vuln:CVE-2025-59342

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CVE-2025-59342