CVE-2026-78301 Affecting bind package, versions <9.20.29-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.21% (10th percentile)

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  • Snyk IDSNYK-ALPINE324-BIND-20154252
  • published27 Sept 2026
  • disclosed16 Sept 2026

Introduced: 16 Sep 2026

NewCVE-2026-78301  (opens in a new tab)

How to fix?

Upgrade Alpine:3.24 bind to version 9.20.29-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bind package and not the bind package as distributed by Alpine. See How to fix? for Alpine:3.24 relevant fixed versions and status.

A malformed zone may contain an NS or DNAME node above its origin, which named treats as a zone cut. If an attacker inserts a malformed zone into a BIND authoritative server (e.g., via zone transfer), queries for names inside the configured zone then lose authoritative status and return an out-of-zone delegation. On a server that also provides recursion BIND can follow this locally sourced cut and cache attacker-supplied data, affecting names outside the configured zone. This situation persists as long as the malformed zone remains in the zone database. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.

CVSS Base Scores

version 3.1