NGINX ngx_http_core_module vulnerability

{
  "id": "303e0f2c0377d979be3b995ff4348f3b20cce436517ed6cbc191fa2bcf218202",
  "url": "https://osv.dev/vulnerability/BIT-nginx-2026-97205",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "NGINX ngx_http_core_module vulnerability",
    "summary": "NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_core_module module. When asynchronous file I/O (AIO) is enabled in certain configurations, processing a Server Side Includes (SSI) page containing “include virtual” commands may trigger a Use-After-Free (UAF) in the NGINX worker process. This may cause memory corruption or a worker process crash. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. Impact: This vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system, corrupt its memory, or possibly trigger code execution. There is no control plane exposure; this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
    "evidence": "osv:BIT-nginx-2026-97205",
    "products": [
      {
        "name": {
          "value": "nginx",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.30.6",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "1.31.7",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "BIT-nginx-2026-97205",
      "aliases": [
        "BIT-nginx-2026-97205",
        "BIT-nginx-gateway-2026-97205",
        "CVE-2026-97205"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "1.30.0"
                },
                {
                  "fixed": "1.30.6"
                },
                {
                  "introduced": "1.31.0"
                },
                {
                  "fixed": "1.31.7"
                }
              ]
            }
          ],
          "package": {
            "name": "nginx",
            "purl": "pkg:bitnami/nginx",
            "ecosystem": "Bitnami"
          },
          "severity": [
            {
              "type": "CVSS_V4",
              "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
            }
          ],
          "database_specific": {
            "source": "https://github.com/bitnami/vulndb/tree/main/data/nginx/BIT-nginx-2026-97205.json"
          }
        }
      ],
      "modified": "2026-10-21T12:11:26.429928178Z",
      "provider": "osv",
      "references": [
        "https://my.f5.com/manage/s/article/K000162608",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-97205"
      ],
      "provider_metadata": {
        "cpes": [
          "cpe:2.3:a:f5:nginx:*:*:*:*:*:*:*:*"
        ],
        "severity": "Critical"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-97205",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 393036,
  "published_at": "2026-10-21T08:54:05.582+00:00"
}