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CVE-2026-33190

Опубликовано: 07 мая 2026
Источник: msrc
EPSS Низкий

Описание

CoreDNS TSIG authentication bypass on encrypted DNS transports

EPSS

Процентиль: 30%
0.00374
Низкий

Связанные уязвимости

CVSS3: 7.5
redhat
3 месяца назад

CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the tsig plugin can be bypassed on non-plain-DNS transports (DoT, DoH, DoH3, DoQ, and gRPC) because it trusts the transport writer's TsigStatus() instead of performing verification itself. The DoH and DoH3 writer's TsigStatus() always returns nil, the DoT server does not set TsigSecret on the dns.Server, and the DoQ and gRPC writers also unconditionally return nil. This allows an unauthenticated remote client to bypass TSIG-based authentication and access resources intended to be restricted behind a tsig require all policy. Plain DNS over TCP and UDP are not affected. This issue has been fixed in version 1.14.3.

CVSS3: 7.5
nvd
3 месяца назад

CoreDNS is a DNS server that chains plugins. In versions prior to 1.14.3, the tsig plugin can be bypassed on non-plain-DNS transports (DoT, DoH, DoH3, DoQ, and gRPC) because it trusts the transport writer's TsigStatus() instead of performing verification itself. The DoH and DoH3 writer's TsigStatus() always returns nil, the DoT server does not set TsigSecret on the dns.Server, and the DoQ and gRPC writers also unconditionally return nil. This allows an unauthenticated remote client to bypass TSIG-based authentication and access resources intended to be restricted behind a tsig require all policy. Plain DNS over TCP and UDP are not affected. This issue has been fixed in version 1.14.3.

CVSS3: 7.5
debian
3 месяца назад

CoreDNS is a DNS server that chains plugins. In versions prior to 1.14 ...

CVSS3: 7.5
redos
10 дней назад

Уязвимость coredns

CVSS3: 7.5
github
3 месяца назад

CoreDNS has TSIG authentication bypass on DoT, DoH, DoH3, DoQ, and gRPC

EPSS

Процентиль: 30%
0.00374
Низкий