PT-2025-38247 · Esm Dev · Esm.Sh

Published 2025-09-17 · Updated 2025-09-17 · CVE-2025-59341

NVD

CVSS v4.0

7.7

7.7

High

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

esm.sh is a nobuild content delivery network(CDN) for modern web development. In 136 and earlier, a Local File Inclusion (LFI) issue was identified in the esm.sh service URL handling. An attacker could craft a request that causes the server to read and return files from the host filesystem (or other unintended file sources).

Fix

Relative Path Traversal

Weakness Enumeration

CWE-23

Related Identifiers

CVE-2025-59341

Affected Products

Esm.Sh

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2025-59341 · Security Note
• https://twitter.com/j3ssiejjj/status/1968326917402324994 · Twitter Post
• https://github.com/esm-dev/esm.sh/security/advisories/GHSA-49pv-gwxp-532r · Note
• https://github.com/esm-dev/esm.sh/blob/c62f191d32639314ff0525d1c3c0e19ea2b16143/server/router.go#L1168 · Note