CVE-2026-26018

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/6/2026

Last Modified3/9/2026

Sourcenvd

Honeypot Sightings0

Affected Products

coredns.io:coredns

Weaknesses (CWE)

CWE-337CWE-400CWE-770

References

https://github.com/coredns/coredns/releases/tag/v1.14.2(security-advisories@github.com)

https://github.com/coredns/coredns/security/advisories/GHSA-h75p-j8xm-m278(security-advisories@github.com)

IOC Correlations

No correlations recorded

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