CVE-2025-65025— esm.sh CDN service has arbitrary file write via tarslip
Quick assessment
Affected
esm-dev esm.sh
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
esm.sh是esm.sh开源的一个内容分发网络。 esm.sh 136之前版本存在路径遍历漏洞，该漏洞源于NPM包解压过程中存在路径遍历，可能导致任意文件写入。
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2025-65025
Vulnerability Information
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Vulnerability Title
esm.sh CDN service has arbitrary file write via tarslip
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
esm.sh 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
esm.sh是esm.sh开源的一个内容分发网络。 esm.sh 136之前版本存在路径遍历漏洞，该漏洞源于NPM包解压过程中存在路径遍历，可能导致任意文件写入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-65025
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Qwen3.6-35B-A3B
· 7727 chars
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III. Intelligence Information for CVE-2025-65025
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IV. Related Vulnerabilities
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V. Comments for CVE-2025-65025
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