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Security Advisories

CVE-2026-26017

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-26017

Severity

7.7

High

CVSS V3

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Summary

CoreDNS ACL Bypass

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.

References

Affected packages

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