SSRF in Esm Esm.sh
CVE-2025-50180
esm.sh is a no-build content delivery network (CDN) for web development. In version 136, esm.sh is vulnerable to a full-response SSRF, allowing an attacker to retrieve information from internal websites through the vulnerability. Version 137 fixes the vulnerability.
Vulnerability class: SSRF (Server-Side Request Forgery)
EPSS: 0.004 (30.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Esm Esm.sh
- Esm-dev Esm.sh — versions = 136
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Patch, Mitigation, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2025-50180?
- CVE-2025-50180 is a high-severity vulnerability in Esm Esm.sh, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2026-02-25.
- How severe is CVE-2025-50180?
- High severity. CVSS v3 base score is 7.5 out of 10.