CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the transfer plugin can select the wrong ACL stanza when both a parent zone and a more-specific subzone are configured. The longestMatch() function in plugin/transfer/transfer.go uses a lexicographic string comparison instead of an actual longest-suffix match to select the winning zone. As a result, a permissive parent-zone transfer rule can override a restrictive subzone rule depending on zone name ordering (e.g., "example.org." > "a.example.org." lexicographically). This allows an unauthorized remote client to perform AXFR/IXFR for the subzone and retrieve its full zone contents. This issue has been fixed in version 1.14.3.

An update of the coredns package has been released.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20703-1 advisory.

    Changes in coredns:

    - Update to version 1.14.3:
      * This release introduces Windows service support, along with full TSIG         verification across DoH, DoH3, QUIC, and gRPC transports, and improved         TSIG propagation and DoH request validation.
      * It also adds optional TLS for the metrics endpoint.
      * Performance and stability are improved through cache prefetching, QUIC         optimizations, and a new max_age option in the forward plugin.
      * Additional updates include enhanced SVCB/HTTPS support, improved zone         transfer behavior, and various DNSSEC, PROXY protocol, and concurrency         fixes.
      * The release is built with Go 1.26.2, which includes security         fixes addressing CVE-2026-32282, CVE-2026-32289, CVE-2026-33810,         CVE-2026-27144, CVE-2026-27143, CVE-2026-32288, CVE-2026-32283,         and CVE-2026-27140, and also includes fixes for CVE-2026-32936,         CVE-2026-33190, CVE-2026-33489, CVE-2026-32934, and CVE-2026-35579.

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the transfer plugin can select
    the wrong ACL stanza when both a parent zone and a more-specific subzone are configured. The
    longestMatch() function in plugin/transfer/transfer.go uses a lexicographic string comparison instead of
    an actual longest-suffix match to select the winning zone. As a result, a permissive parent-zone transfer
    rule can override a restrictive subzone rule depending on zone name ordering (e.g., "example.org." >
    "a.example.org." lexicographically). This allows an unauthorized remote client to perform AXFR/IXFR for
    the subzone and retrieve its full zone contents. This issue has been fixed in version 1.14.3.
    (CVE-2026-33489)

ID	Name	Product	Family	Severity
321834	Photon OS 4.0: Coredns PHSA-2026-4.0-1038	Nessus	PhotonOS Local Security Checks	high
321475	Photon OS 5.0: Coredns PHSA-2026-5.0-0869	Nessus	PhotonOS Local Security Checks	high
313705	openSUSE 16 Security Update : coredns (openSUSE-SU-2026:20703-1)	Nessus	SuSE Local Security Checks	high
440952	SCA: security update for github.com/coredns/coredns (GHSA-h8mm-c463-wjq3)	Tenable Cloud Security	SCA Checks	high
440952	SCA: security update for github.com/coredns/coredns (GHSA-h8mm-c463-wjq3)	Tenable Self-Hosted Container Security	SCA Checks	high

Detections

Analytics

CVE-2026-33489

high

Tenable Plugins

high

high

high

high

high