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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (30.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Esm Esm.sh
- Esm-Dev Esm.sh — versions = 136
Weakness classification (CWE)
References
- github.com/esm-dev/esm.sh/security/advisories/GHSA-3c9r-837r-qqm4 (Exploit, Patch, Mitigation, Vendor Advisory)
- github.com/esm-dev/esm.sh/pull/1149 (Patch, Issue Tracking)
- github.com/esm-dev/esm.sh/commit/0593516c4cfab49ad3b4900416a8432ff2e23eb0 (Patch)
- github.com/esm-dev/esm.sh/blob/f80ff8c8d58749e77fa964abde468fc61f8bd89e/interna… (Patch)
- github.com/esm-dev/esm.sh/blob/f80ff8c8d58749e77fa964abde468fc61f8bd89e/server/… (Patch)
- github.com/esm-dev/esm.sh/releases/tag/v137 (Product, 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.