CVE-2026-27730
HIGH8.6EPSS 0.06%esm.sh has SSRF localhost/private-network bypass in `/http(s)` module route in github.com/esm-dev/esm.sh
Published: 2/25/2026Modified: 3/9/2026
Description
esm.sh has SSRF localhost/private-network bypass in `/http(s)` module route in github.com/esm-dev/esm.sh
Affected packages (2)
- Go/github.com/esm-dev/esm.shfrom 0, < 0.0.0-20250616164159-0593516c4cfa
- Go/github.com/esm-dev/esm.shfrom 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 |
References (6)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-27730
- PATCHhttps://github.com/esm-dev/esm.sh
- WEBhttps://github.com/esm-dev/esm.sh/commit/0593516c4cfab49ad3b4900416a8432ff2e23eb0
- WEBhttps://github.com/esm-dev/esm.sh/pull/1149
- WEBhttps://github.com/esm-dev/esm.sh/releases/tag/v137
- WEBhttps://github.com/esm-dev/esm.sh/security/advisories/GHSA-p2v6-84h2-5x4r