PT-2026-60582 · Coredns · Coredns

CVE-2026-62309 · Published 2026-07-16 · Updated 2026-07-16

NVD

CVSS v3.1

7.5

High

Base vector

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

CoreDNS is a DNS server written in Go. Prior to 1.14.4, a single 28-byte UDP datagram can crash the CoreDNS process when the proxyproto plugin is enabled because plugin/pkg/proxyproto/proxyproto.go PacketConn.ReadFrom handles a PROXY v2 header with non-UDP transport such as family byte 0x11, reassigns addr from a nil readFrom result after parseProxyProtocol errors, and calls addr.String() in the warning log before ServeDNS recovery applies. This issue is fixed in version 1.14.4.

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2026-62309

Affected Products

Coredns

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-62309 · Security Note
• https://github.com/coredns/coredns/commit/60a439dd4febfcd78e3779e952fe3fbf3c16bb1f · Note
• https://github.com/coredns/coredns/security/advisories/GHSA-9rvv-m5g5-wc8r · Note
• https://github.com/coredns/coredns/releases/tag/v1.14.4 · Note
• https://github.com/coredns/coredns/pull/8154 · Note