HIGHCVE-2026-26017Published Modified CNA GitHub_M
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 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.
Metrics
- CVSS v3.1
- 7.7
- Severity
- HIGH
- Fixed in
- —
- Affected Products
- 1
Affected packages
- coredns / coredns< 1.14.2
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N