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CVE-2026-27730

🗓️ 25 Feb 2026 15:37:01Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 4 Views🌐 WEB

esm.sh SSRF via http(s) fetch route allows bypassing localhost checks with DNS aliases; no patch.

Related
Detection
Affected
Refs
Paths
NVD
Vulners
Node
esmesm.shRange137
[
  {
    "vendor": "esm-dev",
    "product": "esm.sh",
    "versions": [
      {
        "version": "<= 137",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
urlquery param/httpSSRF via esm.sh fetch route when user-supplied URL is used to fetch remote resourcesCWE-918
urlquery param/httpsSSRF via esm.sh fetch route when user-supplied URL is used to fetch remote resourcesCWE-918

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27 Feb 2026 17:43Current
5.5Medium risk
Vulners AI Score5.5
CVSS 3.17.5
CVSS 38.6
EPSS0.00064
4