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CVE-2026-40701 NGINX ngx_http_ssl_module vulnerability

🗓️ 13 May 2026 14:12:43Reported by f5Type 
cvelist
 cvelist
🔗 www.cve.org👁 25 Views

Unauthenticated attacker may cause heap use after free in NGINX via ngx_http_ssl_module when ssl_verify_client is on or optional and ssl_ocsp is on.

Related
Affected
Refs
[
  {
    "defaultStatus": "unknown",
    "modules": [
      "ngx_http_ssl_module"
    ],
    "product": "NGINX Plus",
    "vendor": "F5",
    "versions": [
      {
        "lessThan": "*",
        "status": "unaffected",
        "version": "R37",
        "versionType": "custom"
      },
      {
        "lessThan": "R36 P4",
        "status": "affected",
        "version": "R36",
        "versionType": "custom"
      },
      {
        "lessThan": "R32 P6",
        "status": "affected",
        "version": "R32",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "modules": [
      "ngx_http_ssl_module"
    ],
    "product": "NGINX Open Source",
    "vendor": "F5",
    "versions": [
      {
        "lessThan": "*",
        "status": "unaffected",
        "version": "1.31.0",
        "versionType": "semver"
      },
      {
        "lessThan": "1.30.1",
        "status": "affected",
        "version": "1.19.0",
        "versionType": "semver"
      }
    ]
  }
]

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13 May 2026 14:12Current
CVSS 3.14.8
CVSS 46.3
EPSS0.00677
25