EUVD-2026-80989

CoreDNS DoH/DoQ/gRPC bypass UPDATE rejection enforced on UDP/TCP...

CoreDNS DoH/DoQ/gRPC bypass UPDATE rejection enforced on UDP/TCP

Summary CoreDNS accepted RFC 2136 UPDATE messages over DoH, DoH3, DoQ, and DNS-over-gRPC, then allowed the proxy/forward plugin to send them unchanged to an upstream DNS server. UDP, TCP, and DoT rejected the same opcode before plugin dispatch. If an update-capable upstream trusts CoreDNS's sourc...

GHSA-W34Q-CM8F-9C5X OpenTelemetry-Go: Log gRPC exporter ignores env TLS certs, bypassing mTLS/pinning

Summary The OTLP log gRPC exporter loads TLS settings from environment variables but does not apply them when creating gRPC transport credentials. Operators who rely on OTELEXPORTEROTLPLOGSCERTIFICATE, OTELEXPORTEROTLPCERTIFICATE, or related client certificate variables for CA pinning or mTLS get...

EUVD-2026-81262

OpenTelemetry-Go: Log gRPC exporter ignores env TLS certs, bypassing mTLS/pinning...

CVE-2026-45720 Omni: TOCTOU race condition allows multiple concurrent uses of a single-use SAML session token

Omni manages Kubernetes on bare metal, virtual machines, or in a cloud. Prior to 1.6.6 and from 1.7.0 until 1.7.3, SAML.getSession in internal/pkg/auth/interceptor/saml.go checks SAMLAssertion.Used and marks it used in separate state operations. Concurrent requests carrying the same captured...

go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc: OpenTelemetry-Go: TLS certificate bypass allows log telemetry interception and alteration

A flaw was found in OpenTelemetry-Go, specifically within its gRPC log exporter. This vulnerability allows a network attacker to bypass the intended private Certificate Authority CA pinning and mutual Transport Layer Security TLS configurations. The issue arises because the environment-only TLS...

go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc: OpenTelemetry-Go: TLS certificate bypass allows log telemetry interception and alteration

A flaw was found in OpenTelemetry-Go, specifically within its gRPC log exporter. This vulnerability allows a network attacker to bypass the intended private Certificate Authority CA pinning and mutual Transport Layer Security TLS configurations. The issue arises because the environment-only TLS...

SUSE-SU-2026:23745-1 Security update for google-guest-agent

This update for google-guest-agent fixes the following issues: - CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper validation of the HTTP/2 :path pseudo- header bsc1260264. - CVE-2026-56854,CVE-2026-56855,CVE-2026-78662: golang.org/x/crypto/ssh: authentication bypass an...

CLEANSTART-2026-ZG01398 gRPC-Go is the Go language implementation of gRPC

Multiple security vulnerabilities affect the terraform package. gRPC-Go is the Go language implementation of gRPC. See references for individual vulnerability details...

CLEANSTART-2026-PX77651 gRPC-Go is the Go language implementation of gRPC

Multiple security vulnerabilities affect the prometheus-alertmanager package. gRPC-Go is the Go language implementation of gRPC. See references for individual vulnerability details...

CVE-2026-45720: Authentication Bypass by Capture-replay

Omni manages Kubernetes on bare metal, virtual machines, or in a cloud. Prior to 1.6.6 and from 1.7.0 until 1.7.3, SAML.getSession in internal/pkg/auth/interceptor/saml.go checks SAMLAssertion.Used and marks it used in separate state operations. Concurrent requests carrying the same captured...

CVE-2026-45723: Improper Input Validation

Omni manages Kubernetes on bare metal, virtual machines, or in a cloud. Prior to 1.6.6 and 1.7.3, managementServer.CreateSchematic in internal/backend/grpc/schematics.go passes the caller-controlled TalosVersion field to imageFactoryClient.OverlaysVersions without validating it as a version. An...

Improper Certificate Validation

Overview Affected versions of this package are vulnerable to Improper Certificate Validation due to the newGRPCDialOptions not applying the loaded TLS configuration from environment variables when creating gRPC transport credentials. An attacker can intercept or spoof the collector connection usi...

AZL-103110 CVE-2026-81871 affecting package azurelinux-image-tools 1.6.0-3

OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.21.0, the exporters/otlp/otlplog/otlploggrpc package loads OTELEXPORTEROTLPLOGSCERTIFICATE, OTELEXPORTEROTLPCERTIFICATE, and related client certificate environment variables through loadEnvTLS into cfg.tlsCfg, but...

CVE-2026-84445

A flaw was found in gRPC-Go. Servers created with xds.NewGRPCServer can be exploited by a remote client sending a malformed RPC request that lacks the required :authority or Host headers. This can trigger an index-out-of-bounds panic, leading to the termination of the entire server process and a...

CVE-2026-86003

CoreDNS (a DNS server written in Go) prior to 1.14.7 fails to enforce the dns.DefaultMsgAcceptFunc request policy on its DNS-over-HTTPS, DNS-over-HTTP/3, DNS-over-QUIC, and DNS-over-gRPC listeners. Unlike the UDP, TCP, and DNS-over-TLS paths, these listeners call dns.Msg.Unpack without that polic...

CVE-2026-86003 CoreDNS DoH/DoQ/gRPC bypass UPDATE rejection enforced on UDP/TCP

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 listeners in plugin/pkg/doh/doh.go, core/dnsserver/serverquic.go, and core/dnsserver/servergrpc.go call dns.Msg.Unpack without the dns.DefaultMsgAcceptFunc request policy...

CVE-2026-86003 CoreDNS DoH/DoQ/gRPC bypass UPDATE rejection enforced on UDP/TCP

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 listeners in plugin/pkg/doh/doh.go, core/dnsserver/serverquic.go, and core/dnsserver/servergrpc.go call dns.Msg.Unpack without the dns.DefaultMsgAcceptFunc request policy...

CVE-2026-63126 Wire: Unauthenticated decoder crash via 32-bit length integer overflow in ByteArrayProtoReader32 (incomplete fix of CVE-2026-45799)

Wire provides gRPC and protocol buffers for Android, Kotlin, Swift, and Java. Prior to 6.4.5 and 7.0.0-alpha04, Wire protobuf readers do not consistently validate attacker-controlled lengths against the current logical message boundary before advancing cursors, pointers, limits, slices, or...

CVE-2026-73461

On affected EOS platforms with AAA-based gRPC authorization enabled for OpenConfig, gRPC requests of an authenticated user to OpenConfig may use the wrong privilege level, resulting in an authorization using the wrong AAA method list. This does not impact non-gRPC OpenConfig requests such as...