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.
CVE-2025-50180
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 69% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 38(Track)EG Risk 38/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 32%
- KEV
- Not listed
Published
February 25, 2026
Last Modified
June 17, 2026
Advisory Details (6)
Auto-updated Aug 4, 2026Full-response SSRF in esm.sh · Advisory · esm-dev/esm.sh · GitHub
https://github.com/esm-dev/esm.sh/security/advisories/GHSA-3c9r-837r-qqm4v137
Patch available: esm-dev/esm.sh v137
https://github.com/esm-dev/esm.sh/releases/tag/v137Fix SSRF
Patch available: esm-dev/esm.sh v137 (PR #1149 merged 2025-06-16)
https://github.com/esm-dev/esm.sh/pull/1149commit 0593516c4cfa (esm-dev/esm.sh)
Patch available: esm-dev/esm.sh v137 (contains commit 0593516c4cfa)
https://github.com/esm-dev/esm.sh/commit/0593516c4cfab49ad3b4900416a8432ff2e23eb0esm.sh/server/router.go at f80ff8c8d58749e77fa964abde468fc61f8bd89e · esm-dev/esm.sh · GitHub
https://github.com/esm-dev/esm.sh/blob/f80ff8c8d58749e77fa964abde468fc61f8bd89e/server/router.go#L511esm.sh/internal/fetch/fetch.go at f80ff8c8d58749e77fa964abde468fc61f8bd89e · esm-dev/esm.sh · GitHub
https://github.com/esm-dev/esm.sh/blob/f80ff8c8d58749e77fa964abde468fc61f8bd89e/internal/fetch/fetch.go#L13Affected Packages
(1 across 1 ecosystem)
Go(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| github.com/esm-dev/esm.sh | — | 0.0.0-20250616164159-0593516c4cfa | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 30× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-19 15:42 UTCEPSS rescore
- 2026-09-19 13:33 UTCOSV refresh
- 2026-09-18 19:27 UTCEPSS rescore
- 2026-09-18 19:27 UTCEPSS rescore
- 2026-09-17 19:29 UTCEPSS rescore
- 2026-09-16 14:07 UTCEPSS rescore
- 2026-09-16 05:14 UTCEPSS rescore
- 2026-09-13 16:46 UTCEPSS rescore
- 2026-09-12 15:00 UTCEPSS rescore
- 2026-09-11 14:52 UTCEPSS rescore
- 2026-09-11 09:36 UTCEPSS rescore
- 2026-09-10 09:34 UTCEPSS rescore
- 2026-09-08 21:59 UTCEPSS rescore
- 2026-09-07 16:00 UTCEPSS rescore
- 2026-09-06 13:47 UTCEPSS rescore
- 2026-09-05 15:28 UTCEPSS rescore
- 2026-09-04 05:06 UTCEPSS rescore
- 2026-09-02 14:11 UTCEPSS rescore
- 2026-09-01 13:53 UTCEPSS rescore
- 2026-08-31 17:04 UTCOSV refresh
- 2026-08-30 19:16 UTCEPSS rescore
- 2026-08-30 01:21 UTCEPSS rescore
- 2026-08-28 21:40 UTCEPSS rescore
- 2026-08-27 14:24 UTCEPSS rescore
- 2026-08-26 14:45 UTCEPSS rescore
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- 2026-08-25 13:48 UTCEPSS rescore
- 2026-08-24 14:16 UTCEPSS rescore
- 2026-08-24 09:22 UTCEPSS rescore
- 2026-08-23 00:18 UTCEPSS rescore
- 2026-08-21 23:48 UTCEPSS rescore
- 2026-08-20 22:54 UTCEPSS rescore
- 2026-08-19 17:03 UTCEPSS rescore
- 2026-08-18 13:47 UTCEPSS rescore
- 2026-08-17 13:46 UTCEPSS rescore
- 2026-08-16 14:55 UTCEPSS rescore
- 2026-08-16 02:13 UTCEPSS rescore
- 2026-08-15 01:29 UTCEPSS rescore
- 2026-08-14 09:01 UTCEG score recompute
- 2026-08-13 21:59 UTCEPSS rescore
- 2026-08-13 01:01 UTCEG score recompute
- 2026-08-12 13:50 UTCEPSS rescore
- 2026-08-11 23:58 UTCEG score recompute
- 2026-08-11 13:41 UTCEPSS rescore
- 2026-08-11 06:23 UTCEG score recompute
- 2026-08-10 23:59 UTCEPSS rescore
- 2026-08-09 20:54 UTCEG score recompute
- 2026-08-09 13:46 UTCEPSS rescore
- 2026-08-09 08:39 UTCEG score recompute
- 2026-08-08 16:36 UTCEPSS rescore
- 2026-08-07 20:43 UTCEG score recompute
- 2026-08-06 13:46 UTCEPSS rescore
- 2026-08-06 03:01 UTCEG score recompute
- 2026-08-05 19:16 UTCEPSS rescore
- 2026-08-04 15:09 UTCEPSS rescore
- 2026-08-04 10:37 UTCEPSS rescore
- 2026-08-04 05:52 UTCEG score recompute
- 2026-08-03 10:35 UTCEPSS rescore
- 2026-08-02 19:34 UTCEG score recompute
- 2026-08-02 02:26 UTCEPSS rescore
- 2026-08-01 04:15 UTCEPSS rescore
- 2026-07-30 16:27 UTCEPSS rescore
- 2026-07-30 01:30 UTCEPSS rescore
- 2026-07-30 01:30 UTCEPSS rescore
- 2026-07-28 15:35 UTCEPSS rescore
- 2026-07-27 14:06 UTCEG score recompute
Related CVEs(same CWE)
Same CWE
10 shownCWE-918
- CVE-2016-10927EG 10.0CRITICAL
- CVE-2016-10926EG 10.0CRITICAL
- CVE-2018-10511EG 10.0CRITICAL
- CVE-2018-1000124EG 10.0CRITICAL
- CVE-2017-11291EG 10.0EPSS p92CRITICAL
- CVE-2017-12905EG 10.0CRITICAL
- CVE-2017-8794EG 10.0CRITICAL
- CVE-2017-13667EG 9.9CRITICAL
- CVE-2017-17674EG 9.8CRITICAL
- CVE-2013-4864EG 9.8EPSS p93CRITICAL
Frequently asked(5)
What is CVE-2025-50180?
When was CVE-2025-50180 disclosed?
Is CVE-2025-50180 actively exploited?
What is the CVSS score of CVE-2025-50180?
How do I remediate CVE-2025-50180?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-50180
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