CVE-2026-33186

CVE-2026-33186 gRPC-Go RBAC 授权策略绕过：缺少 :path 斜杠（认证绕过） 描述 google.golang.org/grpc 中的 authz 包通过 SDK 级 RBAC 授权实现，使用 deny 和 allow 规则匹配 :path 伪标头。HTTP/2 服务端传输层直接存储来自客户端的原始 :path 值，而不验证其是否以 / 开头。路由层（handleStream）在分发前会对路径进行规范化，但 RBAC 引擎通过 grpc.Methodctx 从上下文中读取的是规范化之前的值。 Deny 规则写作 /Service/Method（带有前导斜杠）。...

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

...

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...

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...

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...

UBUNTU-CVE-2026-84304

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

UBUNTU-CVE-2026-84303

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

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...

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...