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CVE-2026-55602 http-proxy-middleware `router` host+path substring matching allows Host-header-driven backend routing bypass

🗓️ 22 Jun 2026 15:58:08Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 15 Views

A vulnerability in http-proxy-middleware allows routing bypass via unanchored host+path substring matching; fixed in 2.0.10, 3.0.6, and 4.1.0.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-55602
22 Jun 202615:58
attackerkb
Circl
CVE-2026-55602
17 Jun 202617:17
circl
CVE
CVE-2026-55602
22 Jun 202615:58
cve
EUVD
EUVD-2026-38300
22 Jun 202615:58
euvd
Github Security Blog
http-proxy-middleware `router` host+path substring matching allows Host-header-driven backend routing bypass
18 Jun 202613:06
github
NVD
CVE-2026-55602
22 Jun 202618:16
nvd
OSV
GHSA-64MM-VXMG-Q3VJ http-proxy-middleware `router` host+path substring matching allows Host-header-driven backend routing bypass
18 Jun 202613:06
osv
OSV
MINI-54GC-HRHH-JH37
19 Jun 202616:22
osv
OSV
MINI-55F6-57RH-96F5
19 Jun 202616:22
osv
OSV
MINI-7XRC-V9W2-3VH9
22 Jun 202611:42
osv
Rows per page
[
  {
    "vendor": "chimurai",
    "product": "http-proxy-middleware",
    "versions": [
      {
        "version": ">= 4.0.0, < 4.1.0",
        "status": "affected"
      },
      {
        "version": ">= 3.0.0, < 3.0.6",
        "status": "affected"
      },
      {
        "version": ">= 0.16.0, < 2.0.10",
        "status": "affected"
      }
    ]
  }
]

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