CVEvulnerability

CVE-2026-26017

6.3 MEDIUM Published 2026-03-06 Modified 2026-07-15 Official page ↗
Status
Modified
Published
2026-03-06
Last modified
2026-07-15
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.7 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS 3.1 ([email protected])
6.3 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
7.7 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weaknesses
CWE-367

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.

Affected configurations

• coredns.io coredns (< 1.14.2)

Related

Weakness · CWE (1)

  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition weakness

References