Detections
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Echo: github.com/coredns/coredns: security update to 1.14.7

high Tenable Cloud Security Plugin ID 464411

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-82399)

Solution

Update the github.com/coredns/coredns library and its related packages to version 1.14.7 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-82399

Plugin Details

Severity: High

ID: 464411

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/3/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-82399

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2026

Vulnerability Publication Date: 9/16/2026

Reference Information

CVE: CVE-2026-82399