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CVE-2026-42055

🗓️ 17 Jun 2026 14:04:32Reported by f5Type 
cve
 cve
🔗 web.nvd.nist.gov📰️ 1 Media mentions👁 5 Views

CVE-2026-42055: NGINX heap overflow in proxy http two and grpc modules due to large headers when ignore invalid headers is off.

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[
  {
    "defaultStatus": "unknown",
    "modules": [
      "ngx_http_proxy_v2_module",
      "ngx_http_grpc_module"
    ],
    "product": "NGINX Open Source",
    "vendor": "F5",
    "versions": [
      {
        "lessThan": "1.31.2",
        "status": "affected",
        "version": "1.13.10",
        "versionType": "custom"
      },
      {
        "lessThan": "1.30.3",
        "status": "affected",
        "version": "1.30.2",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "modules": [
      "ngx_http_proxy_v2_module",
      "ngx_http_grpc_module"
    ],
    "product": "NGINX Plus",
    "vendor": "F5",
    "versions": [
      {
        "lessThan": "37.0.2.1",
        "status": "affected",
        "version": "37.0",
        "versionType": "custom"
      },
      {
        "lessThan": "R36 P6",
        "status": "affected",
        "version": "R36",
        "versionType": "custom"
      }
    ]
  }
]

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