QwikSec

Security Database

CVE

CWE

Training

CVE-2026-26018

Published: Mar 6, 2026

Modified: Mar 6, 2026

PUBLISHED

CVSS v3.1

7.5

HIGH

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.

Vendor	Product	Versions
coredns	coredns	affected `< 1.14.2`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

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

x_refsource_CONFIRM

https://github.com/coredns/coredns/releases/tag/v1.14.2

x_refsource_MISC

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.