🛡️ CVE-2026-26018
🟠 CVSS 8.0 — High ⚠️ Exploit Public CWE-337 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-337
Public Exploit ⚠️ Yes
Source NVD
Published 2026-03-06
Updated 2026-06-15
Modified 2026-03-09
Fix URL N/A

Affected Packages

Software From version Fixed in
coredns 1.14.2
github.com/coredns/coredns

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