CVE-2026-26017
HIGHCoreDNS < 1.14.2 - DNS Access Control Bypass via Plugin Execution Order
Title source: llmDescription
CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a logical vulnerability in CoreDNS allows DNS access controls to be bypassed due to the default execution order of plugins. Security plugins such as acl are evaluated before the rewrite plugin, resulting in a Time-of-Check Time-of-Use (TOCTOU) flaw. This issue has been patched in version 1.14.2.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_confirm
https://github.com/coredns/coredns/security/advisories/GHSA-c9v3-4pv7-87pr
Release Notes x_refsource_misc
https://github.com/coredns/coredns/releases/tag/v1.14.2
Scores
CVSS v3
7.7
EPSS
0.0031
EPSS Percentile
21.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-367
Status
published
Products (2)
coredns/coredns
0 - 1.14.2Go
coredns.io/coredns
< 1.14.2
Published
Mar 06, 2026
Tracked Since
Mar 06, 2026