CVE-2025-50180

Name: CVE-2025-50180
Creator: NVD / NIST
Published: 2026-02-25T16:23:21.173+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.7/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2025-50180 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. 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. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS 4.0

8.7/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/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

EPSS Probability

0.38%

29.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Esm	Esm.Sh	< 137

References

https://github.com/esm-dev/esm.sh/blob/f80ff8c8d58749e77fa964abde468fc61f8bd89e/internal/fetch/fetch.go#L13Patch
https://github.com/esm-dev/esm.sh/blob/f80ff8c8d58749e77fa964abde468fc61f8bd89e/server/router.go#L511Patch
https://github.com/esm-dev/esm.sh/commit/0593516c4cfab49ad3b4900416a8432ff2e23eb0Patch
https://github.com/esm-dev/esm.sh/pull/1149Issue Tracking, Patch
https://github.com/esm-dev/esm.sh/releases/tag/v137Product, Release Notes
https://github.com/esm-dev/esm.sh/security/advisories/GHSA-3c9r-837r-qqm4Exploit, Mitigation, Patch, Vendor Advisory

Timeline

Published: Feb 25, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-50180?

How severe is CVE-2025-50180?

CVE-2025-50180 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2025-50180?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-50180?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST