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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-26018

CoreDNS Loop Detection Denial of Service Vulnerability

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Status
Published
Published
Updated
Assigning organization
GitHub_M

Description

CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a denial of service vulnerability exists in CoreDNS's loop detection plugin that allows an attacker to crash the DNS server by sending specially crafted DNS queries. The vulnerability stems from the use of a predictable pseudo-random number generator (PRNG) for generating a secret query name, combined with a fatal error handler that terminates the entire process. This issue has been patched in version 1.14.2.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

coredns coredns

  • < 1.14.2affected

References