CVE-2026-26018

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.

• CWE-337
• CWE-400
• CWE-770
• CWE-1241

• https://github.com/coredns/coredns/releases/tag/v1.14.2Product, Release Notes
• https://github.com/coredns/coredns/security/advisories/GHSA-h75p-j8xm-m278Exploit, Vendor Advisory
• https://access.redhat.com/errata/RHSA-2026:25127
• https://access.redhat.com/errata/RHSA-2026:36873
• https://access.redhat.com/errata/RHSA-2026:8151
• https://access.redhat.com/security/cve/CVE-2026-26018
• https://bugzilla.redhat.com/show_bug.cgi?id=2445242
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26018.json

Published

Mar 6, 2026

Last Modified

Jul 15, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-26012vaultwarden is an unofficial Bitwarden compatible server wri…6.5
• CVE-2026-26013LangChain is a framework for building agents and LLM-powered…3.7
• CVE-2026-26014Pion DTLS is a Go implementation of Datagram Transport Layer…5.9
• CVE-2026-26015DocsGPT is a GPT-powered chat for documentation. From versio…9.8
• CVE-2026-26016Wings is the server control plane for Pterodactyl, a free, o…8.1
• CVE-2026-26017CoreDNS is a DNS server that chains plugins. Prior to versio…6.3
• CVE-2026-26019LangChain is a framework for building LLM-powered applicatio…4.1
• CVE-2026-2602The Twentig plugin for WordPress is vulnerable to Stored Cro…6.4
• CVE-2026-26020AutoGPT is a platform that allows users to create, deploy, a…8.8
• CVE-2026-26021set-in provides the set value of nested associative structur…9.8
• CVE-2026-26022Gogs is an open source self-hosted Git service. Prior to ver…5.4
• CVE-2026-26023Dify is an open-source LLM app development platform. Prior t…6.1