CVE-2026-26018highCWE-1241CWE-337CWE-400CWE-770

CVE-2026-26018: fallo de gravedad alta en coredns

CoreDNS Loop Detection Denial of Service Vulnerability

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear coredns+ Monitorear github.com/coredns/coredns

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

21Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 7.5epss 1.2%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Productos afectados
coredns · coredns
CVEs relacionadas — coredns

En el mismo producto, de las más peligrosas a las menos.

CVE-2025-47950HIGHCoreDNS Vulnerable to DoQ Memory Exhaustion via Stream AmplificationEPSS 1.2%CVE-2026-32936HIGHCoreDNS DoH GET path missing size validation causes CPU and memory amplificationEPSS 0.7%CVE-2026-62309HIGHCoreDNS: proxyproto plugin panics on PPv2 datagram with non-UDP transport — single 28-byte packet remote DoSEPSS 0.7%CVE-2026-35579HIGHCoreDNS TSIG authentication bypass on gRPC, QUIC, DoH, and DoH3 transportsEPSS 0.6%CVE-2026-82399HIGHCoreDNS: Unauthenticated memory exhaustion in custom transportsEPSS 0.6%CVE-2026-62299MEDIUMCoreDNS: rewrite-plugin EDNS0 response-revert nil-pointer panic (remote DoS) when a downstream plugin returns a response with no OPT recordEPSS 0.5%