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CVE-2026-73551

🗓️ 21 Sep 2026 20:17:02Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 50 Views🌐 WEB

Remote path-based policy bypass in Envoy via dot-dotdot segments with semicolon parameters.

Related
Detection
Affected
Refs
Paths
NVD
Vulners
Node
OR
envoyproxyenvoyRange<1.36.10
envoyproxyenvoyRange1.37.0–1.37.6
envoyproxyenvoyRange1.38.0–1.38.4
envoyproxyenvoyRange1.39.0–1.39.1
[
  {
    "vendor": "envoyproxy",
    "product": "envoy",
    "versions": [
      {
        "version": "< 1.36.10",
        "status": "affected"
      },
      {
        "version": ">= 1.37.0, < 1.37.6",
        "status": "affected"
      },
      {
        "version": ">= 1.38.0, < 1.38.4",
        "status": "affected"
      },
      {
        "version": ">= 1.39.0, < 1.39.1",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
foopath/user/..;foo=bar/adminDot-dot path segment with semicolon parameters not canonicalized, enabling path confusion and bypass of path-based security policy due to upstream/downstream path interpretation mismatch.CWE-647

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05 Oct 2026 14:06Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.15.3
EPSS0.00527
SSVC
50