bind — security advisory

{
  "id": "4f5e6fbe2abce62ccc4feaf4df3a56454198541669b0e99ef956ea6d6367cac4",
  "url": "https://osv.dev/vulnerability/ALPINE-CVE-2026-19630",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ALPINE-CVE-2026-19630",
    "summary": "In a BIND resolver, inbound DNS protocol messages with a particular structure will result in additional processing, with no limit imposed by BIND. A DNS message with a maliciously large number of such structures will cause BIND to consume disproportionate amounts of CPU time and memory during processing. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.",
    "evidence": "osv:ALPINE-CVE-2026-19630",
    "products": [
      {
        "name": {
          "value": "bind",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "9.20.30-r0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "bind",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "9.20.30-r0",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "bind",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "9.20.30-r0",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "ALPINE-CVE-2026-19630",
      "aliases": [
        "ALPINE-CVE-2026-19630"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "9.20.30-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "bind",
            "purl": "pkg:apk/alpine/bind?arch=source",
            "ecosystem": "Alpine:v3.22"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-19630.json"
          },
          "ecosystem_specific": {}
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "9.20.30-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "bind",
            "purl": "pkg:apk/alpine/bind?arch=source",
            "ecosystem": "Alpine:v3.23"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-19630.json"
          },
          "ecosystem_specific": {}
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "9.20.30-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "bind",
            "purl": "pkg:apk/alpine/bind?arch=source",
            "ecosystem": "Alpine:v3.24"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-19630.json"
          },
          "ecosystem_specific": {}
        }
      ],
      "modified": "2026-10-23T18:30:02.504283924Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-19630"
      ],
      "references": [
        "https://security.alpinelinux.org/vuln/CVE-2026-19630"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-19630",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 424575,
  "published_at": "2026-10-21T13:18:32.453+00:00"
}