CVE-2026-27730
esm.sh has SSRF localhost/private-network bypass in `/http(s)` module route in github.com/esm-dev/esm.sh
8.6
HIGH
CVSS 3.1
EPSS 0.06%
Description
esm.sh has SSRF localhost/private-network bypass in `/http(s)` module route in github.com/esm-dev/esm.sh
How to fix CVE-2026-27730
To remediate CVE-2026-27730, upgrade the affected package to a fixed version below.
- Go/github.com/esm-dev/esm.sh—upgrade to 0.0.0-20250616164159-0593516c4cfa or later
- —upgrade to 0.0.0-20250616164159-0593516c4cfa or later
Is CVE-2026-27730 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 0.0.0-20250616164159-0593516c4cfa
- from 0, < 0.0.0-20250616164159-0593516c4cfa
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.6 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N |