7.5

CVE-2026-26018

Exploit

CoreDNS Loop Detection Denial of Service Vulnerability

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Coredns.Io ≫ Coredns Version < 1.14.2
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.12% 0.627
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-1241 Use of Predictable Algorithm in Random Number Generator

The device uses an algorithm that is predictable and generates a pseudo-random number.

CWE-337 Predictable Seed in Pseudo-Random Number Generator (PRNG)

A Pseudo-Random Number Generator (PRNG) is initialized from a predictable seed, such as the process ID or system time.

CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource.

CWE-770 Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

https://github.com/coredns/coredns/releases/tag/v1.14.2
Product
Release Notes
https://bugzilla.redhat.com/show_bug.cgi?id=2445242
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-26018.json
https://access.redhat.com/errata/RHSA-2026:25127
https://access.redhat.com/errata/RHSA-2026:8151
https://access.redhat.com/errata/RHSA-2026:36873
https://github.com/coredns/coredns/security/advisories/GHSA-h75p-j8xm-m278
Vendor Advisory
Exploit
https://access.redhat.com/security/cve/CVE-2026-26018