unbound: Fix of 6 CVEs

{
  "id": "45eb10909ad64caa0fd8732ebf1f04f72ec081fbe4440565ddce2805d1cd8b93",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1792810562",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "unbound: Fix of 6 CVEs",
    "summary": "- CVE-2025-5994: do not cache non-ECS answers to ECS queries in the subnet cache (Rebirthday attack) - CVE-2026-40622: limit the TTL of a higher-trust NS rrset replacing a cached delegation (ghost domain) - CVE-2026-50106: treat an unsigned parent denial of an island trust anchor as bogus - CVE-2026-96405: add a per-packet budget for name decompression pointers - CVE-2026-109125: clear pending queries on a port when the unwanted-reply threshold is hit - CVE-2026-35501: fix NSEC-not-at-apex parent-side key lookup for island trust anchors",
    "evidence": "osv:CLSA-2026-1792810562",
    "products": [
      {
        "name": {
          "value": "unbound",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.6.6-5.0.1.el7_8.tuxcare.els3",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "unbound-devel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.6.6-5.0.1.el7_8.tuxcare.els3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "unbound-libs",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.6.6-5.0.1.el7_8.tuxcare.els3",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "unbound-python",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.6.6-5.0.1.el7_8.tuxcare.els3",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1792810562",
      "aliases": [
        "CLSA-2026-1792810562"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.6.6-5.0.1.el7_8.tuxcare.els3"
                }
              ]
            }
          ],
          "package": {
            "name": "unbound",
            "purl": "pkg:rpm/tuxcare/unbound?distro=oraclelinux-7",
            "ecosystem": "TuxCare:OracleLinux:7"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux7els/CLSA-2026-1792810562.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.6.6-5.0.1.el7_8.tuxcare.els3"
                }
              ]
            }
          ],
          "package": {
            "name": "unbound-devel",
            "purl": "pkg:rpm/tuxcare/unbound-devel?distro=oraclelinux-7",
            "ecosystem": "TuxCare:OracleLinux:7"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux7els/CLSA-2026-1792810562.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.6.6-5.0.1.el7_8.tuxcare.els3"
                }
              ]
            }
          ],
          "package": {
            "name": "unbound-libs",
            "purl": "pkg:rpm/tuxcare/unbound-libs?distro=oraclelinux-7",
            "ecosystem": "TuxCare:OracleLinux:7"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux7els/CLSA-2026-1792810562.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.6.6-5.0.1.el7_8.tuxcare.els3"
                }
              ]
            }
          ],
          "package": {
            "name": "unbound-python",
            "purl": "pkg:rpm/tuxcare/unbound-python?distro=oraclelinux-7",
            "ecosystem": "TuxCare:OracleLinux:7"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux7els/CLSA-2026-1792810562.json"
          }
        }
      ],
      "modified": "2026-10-26T09:43:42.331575170Z",
      "provider": "osv",
      "upstream": [
        "CVE-2025-5994",
        "CVE-2026-109125",
        "CVE-2026-35501",
        "CVE-2026-40622",
        "CVE-2026-50106",
        "CVE-2026-96405"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/oraclelinux7els/CLSA-2026-1792810562.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-5994",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-109125",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-35501",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-40622",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-50106",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-96405"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2025-5994",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-109125",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-35501",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-40622",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-50106",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-96405",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 450090,
  "published_at": "2026-10-24T02:56:17+00:00"
}