libnginx-mod-js — security advisory

{
  "id": "7fa916823faaf38b87185a6f9f697ae6e29d50768c709e60209d66b7975c47f5",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-78222",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-78222",
    "summary": "A vulnerability exists in NGINX JavaScript where a malformed HTTP response received by ngx.fetch() can crash an NGINX worker when trusted JavaScript reads Response.statusText. Exploitation requires control or influence over the fetched HTTP response. Impact: This vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system. 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:UBUNTU-CVE-2026-78222",
    "products": [
      {
        "name": {
          "value": "libnginx-mod-js",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.7.12-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.8.2-1ubuntu1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libnginx-mod-js",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.9.4-1build2",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "0.9.9-2",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.0.0-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.0.0-3",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "libnginx-mod-js",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.9.1-1ubuntu2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "0.9.1-1ubuntu3",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "0.9.4-1~build1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "0.9.4-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "0.9.4-1build1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "0.9.4-1build2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "0.9.4-1ubuntu0.1~esm1",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "UBUNTU-CVE-2026-78222",
      "aliases": [
        "UBUNTU-CVE-2026-78222"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        },
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "libnginx-mod-js",
            "purl": "pkg:deb/ubuntu/libnginx-mod-js?arch=source&distro=noble",
            "ecosystem": "Ubuntu:24.04:LTS"
          },
          "versions": [
            "0.7.12-2",
            "0.8.2-1ubuntu1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78222.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libnginx-mod-http-js",
                "binary_version": "0.8.2-1ubuntu1"
              },
              {
                "binary_name": "libnginx-mod-stream-js",
                "binary_version": "0.8.2-1ubuntu1"
              },
              {
                "binary_name": "njs",
                "binary_version": "0.8.2-1ubuntu1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "libnginx-mod-js",
            "purl": "pkg:deb/ubuntu/libnginx-mod-js?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "0.9.4-1build2",
            "0.9.9-2",
            "1.0.0-1",
            "1.0.0-3"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78222.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libnginx-mod-http-js",
                "binary_version": "1.0.0-3"
              },
              {
                "binary_name": "libnginx-mod-stream-js",
                "binary_version": "1.0.0-3"
              },
              {
                "binary_name": "njs",
                "binary_version": "1.0.0-3"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "libnginx-mod-js",
            "purl": "pkg:deb/ubuntu/libnginx-mod-js?arch=source&distro=esm-apps%2Fresolute",
            "ecosystem": "Ubuntu:Pro:26.04:LTS"
          },
          "versions": [
            "0.9.1-1ubuntu2",
            "0.9.1-1ubuntu3",
            "0.9.4-1~build1",
            "0.9.4-1",
            "0.9.4-1build1",
            "0.9.4-1build2",
            "0.9.4-1ubuntu0.1~esm1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78222.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "libnginx-mod-http-js",
                "binary_version": "0.9.4-1ubuntu0.1~esm1"
              },
              {
                "binary_name": "libnginx-mod-stream-js",
                "binary_version": "0.9.4-1ubuntu0.1~esm1"
              },
              {
                "binary_name": "njs",
                "binary_version": "0.9.4-1ubuntu0.1~esm1"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T13:01:09.035561149Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-78222"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-78222",
        "https://www.cve.org/CVERecord?id=CVE-2026-78222",
        "https://my.f5.com/manage/s/article/K000162603"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-78222",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/1/score"
  },
  "source_id": "core-osv",
  "document_id": 361075,
  "published_at": "2026-09-02T16:17:00+00:00"
}