CVE-2026-33186

gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from improper input validation of the HTTP/2 :path pseudo-header. The gRPC-Go server was too lenient in its routing logic, accepting requests where the :path omitted the mandatory...

CVE-2026-33186

Summary: CVE-2026-33186 affects gRPC-Go prior to 1.79.3, where Authorization bypass could occur due to improper input validation of the HTTP/2 :path header. The server accepted non-canonical paths like Service/Method (missing leading slash), causing canonical “deny” rules in path-based authorizat...

CVE-2026-33186 gRPC-Go has an authorization bypass via missing leading slash in :path

gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from improper input validation of the HTTP/2 :path pseudo-header. The gRPC-Go server was too lenient in its routing logic, accepting requests where the :path omitted the mandatory...

CVE-2026-33186

gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from improper input validation of the HTTP/2 :path pseudo-header. The gRPC-Go server was too lenient in its routing logic, accepting requests where the :path omitted the mandatory...

CVE-2026-33186 gRPC-Go has an authorization bypass via missing leading slash in :path

gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from improper input validation of the HTTP/2 :path pseudo-header. The gRPC-Go server was too lenient in its routing logic, accepting requests where the :path omitted the mandatory...

CVE-2026-33186: Improper Authorization

gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from improper input validation of the HTTP/2 :path pseudo-header. The gRPC-Go server was too lenient in its routing logic, accepting requests where the :path omitted the mandatory...

gRPC-Go 授权问题漏洞

gRPC-Go is a high-performance, general-purpose RPC framework developed from the grpc project. Prior to version 1.79.3, there was an authorization vulnerability in gRPC-Go. This vulnerability stemmed from improper input validation of the :path pseudoheader in HTTP/2, which could lead to...

Incorrect Authorization

Overview Affected versions of this package are vulnerable to Incorrect Authorization in the processing of HTTP/2 :path pseudo-headers in handleStream. An attacker can gain unauthorized access to restricted resources by sending requests with malformed :path headers that omit the leading slash. Thi...

Security Bulletin: IBM CloudPak for Data Scheduling Service is vulernable to IBM X-Force ID: 350626.

Summary GRPC-Go is used by the CP4D Scheduling Service for inter-process communication. IBM X-Force ID: 350626. Vulnerability Details IBM X-Force ID: 350626 DESCRIPTION: gRPC-Go is vulnerable to a denial of service, caused by a flaw in handling multiplexed streams in the HTTP/2 protocol. By sendi...

GO-2023-2153 Denial of service from HTTP/2 Rapid Reset in google.golang.org/grpc

An attacker can send HTTP/2 requests, cancel them, and send subsequent requests. This is valid by the HTTP/2 protocol, but would cause the gRPC-Go server to launch more concurrent method handlers than the configured maximum stream limit, grpc.MaxConcurrentStreams. This results in a denial of...

GHSA-M425-MQ94-257G gRPC-Go HTTP/2 Rapid Reset vulnerability

Impact In affected releases of gRPC-Go, it is possible for an attacker to send HTTP/2 requests, cancel them, and send subsequent requests, which is valid by the HTTP/2 protocol, but would cause the gRPC-Go server to launch more concurrent method handlers than the configured maximum stream limit...

gRPC-Go HTTP/2 Rapid Reset vulnerability

Impact In affected releases of gRPC-Go, it is possible for an attacker to send HTTP/2 requests, cancel them, and send subsequent requests, which is valid by the HTTP/2 protocol, but would cause the gRPC-Go server to launch more concurrent method handlers than the configured maximum stream limit...

grpc-go:fuzz_helloserver: Segv on unknown address in internal/poll.

Detailed Report: https://oss-fuzz.com/testcase?key=5435017637789696 Project: grpc-go Fuzzing Engine: libFuzzer Fuzz Target: fuzzhelloserver Job Type: libfuzzerasangrpc-go Platform Id: linux Crash Type: Segv on unknown address Crash Address: Crash State: internal/poll. pthreadcreate...

PT-2023-5866

Name of the Vulnerable Software and Affected Versions HTTP/2 protocol affected versions not specified Description This protocol-level issue allows remote attackers to cause a denial of service DoS by exhausting server resources. The flaw stems from the HTTP/2 multiplexing feature, which allows...

grpc-go:fuzz_helloserver: Null-dereference READ in pthread_create

Detailed Report: https://oss-fuzz.com/testcase?key=6289361436278784 Project: grpc-go Fuzzing Engine: libFuzzer Fuzz Target: fuzzhelloserver Job Type: libfuzzerasangrpc-go Platform Id: linux Crash Type: Null-dereference READ Crash Address: 0x000000000000 Crash State: pthreadcreate...

grpc-go:fuzz_helloclient: Crash in pthread_create

Detailed Report: https://oss-fuzz.com/testcase?key=6691313956814848 Project: grpc-go Fuzzing Engine: libFuzzer Fuzz Target: fuzzhelloclient Job Type: libfuzzerasangrpc-go Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x618000000080 Crash State: pthreadcreate cgotrypthreadcreate...

grpc-go:fuzz_helloclient: Null-dereference READ with empty stacktrace

Detailed Report: https://oss-fuzz.com/testcase?key=4632082384551936 Project: grpc-go Fuzzing Engine: libFuzzer Fuzz Target: fuzzhelloclient Job Type: libfuzzerasangrpc-go Platform Id: linux Crash Type: Null-dereference READ Crash Address: 0x000000000000 Crash State: NULL Sanitizer: address ASAN...

grpc-go:fuzz_helloclient: Segv on unknown address with empty stacktrace

Detailed Report: https://oss-fuzz.com/testcase?key=6754505314664448 Project: grpc-go Fuzzing Engine: libFuzzer Fuzz Target: fuzzhelloclient Job Type: libfuzzerasangrpc-go Platform Id: linux Crash Type: Segv on unknown address Crash Address: Crash State: NULL Sanitizer: address ASAN Crash Revision...

grpc-go:fuzz_helloserver: Crash with empty stacktrace

Detailed Report: https://oss-fuzz.com/testcase?key=5073298520670208 Project: grpc-go Fuzzing Engine: libFuzzer Fuzz Target: fuzzhelloserver Job Type: libfuzzerasangrpc-go Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x10c000190820 Crash State: NULL Sanitizer: address ASAN Recommende...

grpc-go:fuzz_helloserver: Crash in pthread_create

Detailed Report: https://oss-fuzz.com/testcase?key=6645822266671104 Project: grpc-go Fuzzing Engine: libFuzzer Fuzz Target: fuzzhelloserver Job Type: libfuzzerasangrpc-go Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x618000000080 Crash State: pthreadcreate cgotrypthreadcreate...