gRPC-Go xDS servers: Denial of Service (DoS) via crash due to missing `:authority` and `Host` headers

A vulnerability exists in gRPC-Go servers configured with xds.NewGRPCServer where a crafted request missing both :authority and Host headers can cause a server panic, resulting in a Denial of Service DoS. Servers built with xds.NewGRPCServer install an xDS routing interceptor on every RPC. This...

EUVD-2026-69419

gRPC-Go: xDS RBAC HTTP Filter bypass via mixed-case Header Matching and gRFC A41 validation evasion...

CVE-2026-33186

CVE-2026-33186 gRPC-Go RBAC Authorization Policy Bypass via Missing :path Slash Auth Bypass Description The authz package in google.golang.org/grpc implements SDK-level RBAC authorization using deny and allow rules matched against the :path pseudo-header. The HTTP/2 server transport stores the ra...

gRPC-Go: Heap Memory Exhaustion (OOM) via HTTP/2 DATA Frame Fragmentation

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The vulnerability in the `internal/transport/transport.go` file of the gRPC-Go framework for remote procedure calls in the Go programming language allows a attacker to cause a service failure.

The vulnerability in the internal/transport/transport.go file of the Go-based gRPC-Go framework for remote procedure calls involves an uncontrolled resource consumption. Exploiting this vulnerability could allow a malicious actor to cause service failures...

SUSE CVE-2026-84303

gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, the xDS RBAC HTTP filter in internal/xds/httpfilter/rbac/rbac.go does not lowercase header matcher names in normalizeHeaderMatcher even though incoming metadata keys are lowercase. A DENY policy using a mixed-case name such as...

SUSE CVE-2026-84304

gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, internal/transport/transport.go stores each fragmented HTTP/2 DATA frame as a separate recvMsg in recvBuffer, so millions of one-byte frames can consume disproportionate heap memory even when payload bytes remain within connectio...

CVE-2026-84303

gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, th...

CVE-2026-84304

gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, in...

Linux Distros Unpatched Vulnerability : CVE-2026-84303

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, the xDS RBAC HTTP filter in internal/xds/httpfilter/rbac/rbac.go does not lowercase header...

Linux Distros Unpatched Vulnerability : CVE-2026-84304

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, internal/transport/transport.go stores each fragmented HTTP/2 DATA frame as a separate recvM...

UBUNTU-CVE-2026-84303

gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, th...

UBUNTU-CVE-2026-84304

gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, in...

gRPC-Go: Heap Memory Exhaustion (OOM) via HTTP/2 DATA Frame Fragmentation

Impact An unauthenticated remote attacker can initiate a gRPC stream and purposefully fragment their payload into millions of tiny e.g., 1-byte HTTP/2 DATA frames. Even if the total payload volume falls within the configured connection and stream flow-control windows, each independent fragment...

GHSA-VP52-PCJ8-J9QC gRPC-Go: Heap Memory Exhaustion (OOM) via HTTP/2 DATA Frame Fragmentation

Impact An unauthenticated remote attacker can initiate a gRPC stream and purposefully fragment their payload into millions of tiny e.g., 1-byte HTTP/2 DATA frames. Even if the total payload volume falls within the configured connection and stream flow-control windows, each independent fragment...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the HTTP/2 DATA frame receive buffer handling, where each received fragment incurs per-fragment tracking and queue allocation overhead even while staying within the configured...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the HTTP/2 DATA frame receive buffer handling, where each received fragment incurs per-fragment tracking and queue allocation overhead even while staying within the configured...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the HTTP/2 DATA frame receive buffer handling, where each received fragment incurs per-fragment tracking and queue allocation overhead even while staying within the configured...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the HTTP/2 DATA frame receive buffer handling, where each received fragment incurs per-fragment tracking and queue allocation overhead even while staying within the configured...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the HTTP/2 DATA frame receive buffer handling, where each received fragment incurs per-fragment tracking and queue allocation overhead even while staying within the configured...