UnratedFix available

DEBIAN-CVE-2026-13204

Type: advisorySource: OSV1 source record

If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit unexpectedly with an assertion while validating this proof. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.

Announced 22 Jul 2026Source revision 1

Original source ↗

DEBIAN-CVE-2026-13204

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-13204

bind9

Source reference: /affected/0/package/name

Affected versions: 1:9.18.12-1
Source reference: /affected/0/versions
1:9.18.13-1
Source reference: /affected/0/versions
1:9.18.16-1
Source reference: /affected/0/versions
1:9.18.16-1~deb12u1
Source reference: /affected/0/versions
1:9.18.16-1~deb12u1~bpo11+1
Source reference: /affected/0/versions
1:9.18.19-1~deb12u1
Source reference: /affected/0/versions
1:9.18.19-1~deb12u1~bpo11+1
Source reference: /affected/0/versions
1:9.18.24-1
Source reference: /affected/0/versions
1:9.18.24-1~bpo11+1
Source reference: /affected/0/versions
1:9.18.28-1~deb12u1
Source reference: /affected/0/versions
1:9.18.28-1~deb12u2
Source reference: /affected/0/versions
1:9.18.33-1~deb12u2
Source reference: /affected/0/versions
1:9.18.41-1~deb12u1
Source reference: /affected/0/versions
1:9.18.44-1~deb12u1
Source reference: /affected/0/versions
1:9.18.47-1~deb12u1
Source reference: /affected/0/versions
1:9.18.49-1~deb12u1
Source reference: /affected/0/versions
Fixed versions: 1:9.18.49-1~deb12u2
Source reference: /affected/0/ranges
Prerequisites: Not stated in this record

bind9

Source reference: /affected/1/package/name

Affected versions: 1:9.20.11-4
Source reference: /affected/1/versions
1:9.20.15-1
Source reference: /affected/1/versions
1:9.20.15-1~deb13u1
Source reference: /affected/1/versions
1:9.20.15-1~deb13u1~bpo12+1
Source reference: /affected/1/versions
1:9.20.15-2
Source reference: /affected/1/versions
1:9.20.18-1
Source reference: /affected/1/versions
1:9.20.18-1~deb13u1
Source reference: /affected/1/versions
1:9.20.18-1~deb13u1~bpo12+1
Source reference: /affected/1/versions
1:9.20.19-1
Source reference: /affected/1/versions
1:9.20.19-1~bpo12+1
Source reference: /affected/1/versions
1:9.20.20-1
Source reference: /affected/1/versions
1:9.20.20-1~bpo12+1
Source reference: /affected/1/versions
1:9.20.21-1
Source reference: /affected/1/versions
1:9.20.21-1~deb13u1
Source reference: /affected/1/versions
1:9.20.21-1~deb13u1~bpo12+1
Source reference: /affected/1/versions
1:9.20.22-1
Source reference: /affected/1/versions
1:9.20.23-1
Source reference: /affected/1/versions
1:9.20.23-1~deb13u1
Source reference: /affected/1/versions
1:9.20.23-1~deb13u1~bpo12+1
Source reference: /affected/1/versions
1:9.20.24-1
Source reference: /affected/1/versions
1:9.20.26-1~deb13u1~bpo12+1
Source reference: /affected/1/versions
Fixed versions: 1:9.20.26-1~deb13u1
Source reference: /affected/1/ranges
Prerequisites: Not stated in this record

bind9

Source reference: /affected/2/package/name

Affected versions: 1:9.20.11-4
Source reference: /affected/2/versions
1:9.20.15-1
Source reference: /affected/2/versions
1:9.20.15-1~deb13u1
Source reference: /affected/2/versions
1:9.20.15-1~deb13u1~bpo12+1
Source reference: /affected/2/versions
1:9.20.15-2
Source reference: /affected/2/versions
1:9.20.18-1
Source reference: /affected/2/versions
1:9.20.18-1~deb13u1
Source reference: /affected/2/versions
1:9.20.18-1~deb13u1~bpo12+1
Source reference: /affected/2/versions
1:9.20.19-1
Source reference: /affected/2/versions
1:9.20.19-1~bpo12+1
Source reference: /affected/2/versions
1:9.20.20-1
Source reference: /affected/2/versions
1:9.20.20-1~bpo12+1
Source reference: /affected/2/versions
1:9.20.21-1
Source reference: /affected/2/versions
1:9.20.21-1~deb13u1
Source reference: /affected/2/versions
1:9.20.21-1~deb13u1~bpo12+1
Source reference: /affected/2/versions
1:9.20.22-1
Source reference: /affected/2/versions
1:9.20.23-1
Source reference: /affected/2/versions
1:9.20.23-1~deb13u1
Source reference: /affected/2/versions
1:9.20.23-1~deb13u1~bpo12+1
Source reference: /affected/2/versions
1:9.20.24-1
Source reference: /affected/2/versions
1:9.20.26-1~deb13u1
Source reference: /affected/2/versions
1:9.20.26-1~deb13u1~bpo12+1
Source reference: /affected/2/versions
Fixed versions: 1:9.20.26-1
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.18.49-1~deb12u2"
          }
        ]
      }
    ],
    "package": {
      "name": "bind9",
      "purl": "pkg:deb/debian/bind9?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "1:9.18.12-1",
      "1:9.18.13-1",
      "1:9.18.16-1",
      "1:9.18.16-1~deb12u1",
      "1:9.18.16-1~deb12u1~bpo11+1",
      "1:9.18.19-1~deb12u1",
      "1:9.18.19-1~deb12u1~bpo11+1",
      "1:9.18.24-1",
      "1:9.18.24-1~bpo11+1",
      "1:9.18.28-1~deb12u1",
      "1:9.18.28-1~deb12u2",
      "1:9.18.33-1~deb12u2",
      "1:9.18.41-1~deb12u1",
      "1:9.18.44-1~deb12u1",
      "1:9.18.47-1~deb12u1",
      "1:9.18.49-1~deb12u1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-13204.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.20.26-1~deb13u1"
          }
        ]
      }
    ],
    "package": {
      "name": "bind9",
      "purl": "pkg:deb/debian/bind9?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "1:9.20.11-4",
      "1:9.20.15-1",
      "1:9.20.15-1~deb13u1",
      "1:9.20.15-1~deb13u1~bpo12+1",
      "1:9.20.15-2",
      "1:9.20.18-1",
      "1:9.20.18-1~deb13u1",
      "1:9.20.18-1~deb13u1~bpo12+1",
      "1:9.20.19-1",
      "1:9.20.19-1~bpo12+1",
      "1:9.20.20-1",
      "1:9.20.20-1~bpo12+1",
      "1:9.20.21-1",
      "1:9.20.21-1~deb13u1",
      "1:9.20.21-1~deb13u1~bpo12+1",
      "1:9.20.22-1",
      "1:9.20.23-1",
      "1:9.20.23-1~deb13u1",
      "1:9.20.23-1~deb13u1~bpo12+1",
      "1:9.20.24-1",
      "1:9.20.26-1~deb13u1~bpo12+1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-13204.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1:9.20.26-1"
          }
        ]
      }
    ],
    "package": {
      "name": "bind9",
      "purl": "pkg:deb/debian/bind9?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "1:9.20.11-4",
      "1:9.20.15-1",
      "1:9.20.15-1~deb13u1",
      "1:9.20.15-1~deb13u1~bpo12+1",
      "1:9.20.15-2",
      "1:9.20.18-1",
      "1:9.20.18-1~deb13u1",
      "1:9.20.18-1~deb13u1~bpo12+1",
      "1:9.20.19-1",
      "1:9.20.19-1~bpo12+1",
      "1:9.20.20-1",
      "1:9.20.20-1~bpo12+1",
      "1:9.20.21-1",
      "1:9.20.21-1~deb13u1",
      "1:9.20.21-1~deb13u1~bpo12+1",
      "1:9.20.22-1",
      "1:9.20.23-1",
      "1:9.20.23-1~deb13u1",
      "1:9.20.23-1~deb13u1~bpo12+1",
      "1:9.20.24-1",
      "1:9.20.26-1~deb13u1",
      "1:9.20.26-1~deb13u1~bpo12+1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-13204.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #55390 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 15:48:25 GMT
Publisher date: Wed, 22 Jul 2026 15:16:52 GMT

Read the original announcement