CVEvulnerability

CVE-2026-62309

7.5 HIGH Published 2026-07-16 Modified 2026-07-22 Official page ↗
Status
Analyzed
Published
2026-07-16
Last modified
2026-07-22
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-476

Description

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.

Affected configurations

• coredns.io coredns (< 1.14.4)

Related

Weakness · CWE (1)

  • CWE-476 NULL Pointer Dereference weakness

References