CVE-2026-26017 — CoreDNS ACL Bypass
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 o…
Published: 2026-03-06 · CVSS: 7.7 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7