CVE-2026-55991 in unbound - Patched by Root

{
  "id": "2d78229766891ea944680f64fb470be1a51c50a984056817a91b31cf654ef7f3",
  "url": "https://osv.dev/vulnerability/ROOT-OS-DEBIAN-13-CVE-2026-55991",
  "method": "structured",
  "payload": {
    "kind": "withdrawal",
    "title": "CVE-2026-55991 in unbound - Patched by Root",
    "summary": "Root has patched CVE-2026-55991 in the unbound package for Root:Debian:13. Multiple fixed versions available.",
    "evidence": "osv:ROOT-OS-DEBIAN-13-CVE-2026-55991",
    "products": [
      {
        "name": {
          "value": "unbound",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.22.0-2+deb13u3.aikido.3",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "1.22.0-2+deb13u3.aikido.4",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "rootio-unbound",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.22.0-2+deb13u3.aikido.3",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "1.22.0-2+deb13u3.aikido.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "ROOT-OS-DEBIAN-13-CVE-2026-55991",
      "aliases": [
        "ROOT-OS-DEBIAN-13-CVE-2026-55991"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.22.0-2+deb13u3.aikido.3"
                },
                {
                  "fixed": "1.22.0-2+deb13u3.aikido.4"
                }
              ]
            }
          ],
          "package": {
            "name": "unbound",
            "ecosystem": "Root:Debian:13"
          },
          "database_specific": {
            "source": "https://api.root.io/external/osv/ROOT-OS-DEBIAN-13-CVE-2026-55991.json",
            "root_patched": true,
            "upstream_version": "1.22.0-2+deb13u3",
            "all_fixed_versions": [
              "1.22.0-2+deb13u3.aikido.3",
              "1.22.0-2+deb13u3.aikido.4"
            ],
            "root_patch_version": "aikido.4",
            "total_fixed_versions": 2
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.22.0-2+deb13u3.aikido.3"
                },
                {
                  "fixed": "1.22.0-2+deb13u3.aikido.4"
                }
              ]
            }
          ],
          "package": {
            "name": "rootio-unbound",
            "ecosystem": "Root:Debian:13"
          },
          "database_specific": {
            "source": "https://api.root.io/external/osv/ROOT-OS-DEBIAN-13-CVE-2026-55991.json",
            "root_patched": true,
            "upstream_version": "1.22.0-2+deb13u3",
            "all_fixed_versions": [
              "1.22.0-2+deb13u3.aikido.3",
              "1.22.0-2+deb13u3.aikido.4"
            ],
            "root_patch_version": "aikido.4",
            "total_fixed_versions": 2
          }
        }
      ],
      "modified": "2026-10-09T13:00:17.349189754Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-55991"
      ],
      "references": [],
      "provider_metadata": {
        "distro": "debian",
        "source": "Root",
        "severity": "MEDIUM",
        "distro_version": "13"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-55991",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 120909,
  "published_at": "2026-09-23T08:20:02+00:00"
}