CVE-2026-84304 gRPC-Go: Heap Memory Exhaustion (OOM) via HTTP/2 DATA Frame Fragmentation

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-2026-84304 gRPC-Go: Heap Memory Exhaustion (OOM) via HTTP/2 DATA Frame Fragmentation

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-2026-84304

CVE-2026-84304 affects gRPC-Go , the Go implementation of gRPC, prior to version 1.83.1 . The root cause resides in internal/transport/transport.go, where each fragmented HTTP/2 DATA frame is stored as a separate recvMsg in the receive buffer. An unauthenticated remote attacker can exploit this b...

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-2026-84304 gRPC-Go: Heap Memory Exhaustion (OOM) via HTTP/2 DATA Frame Fragmentation

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

CVE-2026-84303 affects gRPC-Go (the Go implementation of gRPC). The xDS RBAC HTTP filter (internal/xds/httpfilter/rbac/rbac.go) fails to lowercase header matcher names in normalizeHeaderMatcher, while incoming metadata keys are already lowercase. A DENY policy using a mixed-case name (e.g., X-Rol...

CVE-2026-84303 gRPC-Go: xDS RBAC HTTP Filter bypass via mixed-case Header Matching and gRFC A41 validation evasion

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...

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...

CVE-2026-84303 gRPC-Go: xDS RBAC HTTP Filter bypass via mixed-case Header Matching and gRFC A41 validation evasion

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...

Security Bulletin: IBM Storage Fusion Data Foundation is vulnerable to Authorization Bypass.

Summary google.golang.org/grpc is used by IBM Storage Fusion Data Foundation, which could allow Authorization Bypass. CVE-2026-33186. Vulnerability Details CVEID:CVE-2026-33186 DESCRIPTION: gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass...

CVE-2026-84304: Uncontrolled Resource Consumption

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...

PT-2026-84376

Name of the Vulnerable Software and Affected Versions gRPC-Go versions prior to 1.83.1 Description The xDS RBAC HTTP filter in internal/xds/httpfilter/rbac/rbac.go fails to lowercase header matcher names within the normalizeHeaderMatcher function, despite incoming metadata keys being lowercase...

CVE-2026-84303: Improper Handling of Case Sensitivity

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...

Security update for helm

This update for helm fixes the following issues: CVE-2026-41178: go.opentelemetry.io/otel/baggage,go.opentelemetry.io/otel/propagation: no rejection of raw-length headers in baggage parsing allows for DoS via oversized inputs bsc1276510. CVE-2026-63308: processing zero-length byte slices in...

SUSE-SU-2026:3882-1 Security update for helm

This update for helm fixes the following issues: - CVE-2026-41178: go.opentelemetry.io/otel/baggage,go.opentelemetry.io/otel/propagation: no rejection of raw-length headers in baggage parsing allows for DoS via oversized inputs bsc1276510. - CVE-2026-63308: processing zero-length byte slices in...

google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation

A flaw was found in gRPC-Go, the Go language implementation of gRPC. This vulnerability, an authorization bypass, is caused by improper input validation of the HTTP/2 :path pseudo-header. A remote attacker can exploit this by sending raw HTTP/2 frames with a malformed :path that omits the mandato...

Important: Red Hat Security Advisory: osbuild-composer security update

An update for osbuild-composer is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity ratin...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the processSecuredAnnotation method of GrpcServiceAuthorizationConfigurer, which uses MultiValueMap.addAll to combine class-level and method-level @Secured rules and evaluates the merged set with...

com.alibaba.rsocket:alibaba-broker-grpc-gateway (>=1.0.0.m1, <=1.1.6), com.santaobrand.nexus:core-grpc (0.0.1) +47 more potentially affected by CVE-2026-82594 via io.github.lognet:grpc-spring-boot-starter (>=2.4.4, <=5.2.0)

io.github.lognet:grpc-spring-boot-starter MAVEN version =2.4.4, =1.0.0.m1, =0.0.1, =1.0.7, =0.0.4, =1.7.0, =2025.02, =2025.02, =2023.05, =0.11.1, =0.11.1, =0.11.1, =2.1.2 and more Source cves: CVE-2026-82594 Source advisory: SNYK:JAVA-IOGITHUBLOGNET-19433209...

EUVD-2026-68297

A vulnerability has been found in LogNet grpc-spring-boot-starter up to 5.2.0. Affected is an unknown function of the component Annotation Processing. Such manipulation leads to improper authorization. The attack may be performed from remote. A high complexity level is associated with this attack...