Excessive Platform Resource Consumption within a Loop Affecting openshift4/ose-coredns package, versions *


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.61% (48th percentile)

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  • Snyk IDSNYK-RHEL7-OPENSHIFT4OSECOREDNS-20124060
  • published24 Sept 2026
  • disclosed16 Sept 2026

Introduced: 16 Sep 2026

CVE-2026-82399  (opens in a new tab)
CWE-1050  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 openshift4/ose-coredns.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openshift4/ose-coredns package and not the openshift4/ose-coredns package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

CoreDNS is a DNS server written in Go. Prior to 1.14.7, the DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and DNS-over-gRPC request paths in plugin/pkg/doh/doh.go, core/dnsserver/server_quic.go, and core/dnsserver/server_grpc.go call dns.Msg.Unpack on attacker-controlled DNS section counts before dns.DefaultMsgAcceptFunc validates the fixed header. An unauthenticated client can use DNS name compression and excessive section counts to amplify allocation before the plugin chain, so plugin-level rate limiting cannot prevent concurrent requests from exhausting memory and terminating CoreDNS. The ordinary UDP and TCP listeners are not affected because they validate the header first. This issue is fixed in version 1.14.7.

CVSS Base Scores

version 3.1