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SCA: security update for github.com/coredns/coredns (GHSA-h8mm-c463-wjq3)

high Tenable Cloud Security Plugin ID 440952

Description

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)

Solution

Update the github.com/coredns/coredns library and its related packages to version 1.14.3 or later.

See Also

https://github.com/advisories/GHSA-h8mm-c463-wjq3

Plugin Details

Severity: High

ID: 440952

Version: Revision 1.7

Type: Local

Family: SCA Checks

Published: 4/29/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N

CVSS Score Source: CVE-2026-33489

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.2

Threat Score: 6.9

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/28/2026

Vulnerability Publication Date: 4/28/2026

Reference Information

CVE: CVE-2026-33489