VULNERABILITY INTELLIGENCE

CVE-2026-26017

CVSS score7.7 HIGH
EPSS probability0.42%
CISA KEVNot currently listed
Published2026-03-06
Last modified2026-07-15
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Description

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.

Weakness classification

  • security-advisories@github.com: CWE-367
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-367

Primary references