CVE-2025-50180
esm.sh is vulnerable to full-response SSRF
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.
INFO
Published Date :
Feb. 25, 2026, 4:23 p.m.
Last Modified :
Feb. 27, 2026, 5:44 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update esm.sh to version 137.
- Verify the SSRF vulnerability is no longer present.
- Monitor for any further security updates.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-50180.
| URL | Resource |
|---|---|
| https://github.com/esm-dev/esm.sh/blob/f80ff8c8d58749e77fa964abde468fc61f8bd89e/internal/fetch/fetch.go#L13 | Patch |
| https://github.com/esm-dev/esm.sh/blob/f80ff8c8d58749e77fa964abde468fc61f8bd89e/server/router.go#L511 | Patch |
| https://github.com/esm-dev/esm.sh/commit/0593516c4cfab49ad3b4900416a8432ff2e23eb0 | Patch |
| https://github.com/esm-dev/esm.sh/pull/1149 | Issue TrackingPatch |
| https://github.com/esm-dev/esm.sh/releases/tag/v137 | ProductRelease Notes |
| https://github.com/esm-dev/esm.sh/security/advisories/GHSA-3c9r-837r-qqm4 | ExploitMitigationPatchVendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-50180 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-50180
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-50180 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-50180 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 27, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CPE Configuration OR *cpe:2.3:a:esm:esm.sh:*:*:*:*:*:*:*:* versions up to (excluding) 137 Added Reference Type GitHub, Inc.: https://github.com/esm-dev/esm.sh/blob/f80ff8c8d58749e77fa964abde468fc61f8bd89e/internal/fetch/fetch.go#L13 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/esm-dev/esm.sh/blob/f80ff8c8d58749e77fa964abde468fc61f8bd89e/server/router.go#L511 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/esm-dev/esm.sh/commit/0593516c4cfab49ad3b4900416a8432ff2e23eb0 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/esm-dev/esm.sh/pull/1149 Types: Issue Tracking, Patch Added Reference Type GitHub, Inc.: https://github.com/esm-dev/esm.sh/releases/tag/v137 Types: Product, Release Notes Added Reference Type GitHub, Inc.: https://github.com/esm-dev/esm.sh/security/advisories/GHSA-3c9r-837r-qqm4 Types: Exploit, Mitigation, Patch, Vendor Advisory -
New CVE Received by [email protected]
Feb. 25, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 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 Added CWE CWE-918 Added Reference https://github.com/esm-dev/esm.sh/blob/f80ff8c8d58749e77fa964abde468fc61f8bd89e/internal/fetch/fetch.go#L13 Added Reference https://github.com/esm-dev/esm.sh/blob/f80ff8c8d58749e77fa964abde468fc61f8bd89e/server/router.go#L511 Added Reference https://github.com/esm-dev/esm.sh/commit/0593516c4cfab49ad3b4900416a8432ff2e23eb0 Added Reference https://github.com/esm-dev/esm.sh/pull/1149 Added Reference https://github.com/esm-dev/esm.sh/releases/tag/v137 Added Reference https://github.com/esm-dev/esm.sh/security/advisories/GHSA-3c9r-837r-qqm4