CVE-2026-54426 Apache bRPC: Stack Exhaustion via Unbounded Recursion in Redis Reply Parser

Uncontrolled recursion in the Redis reply parser in Apache bRPC 1.18.0 allows a remote Redis server peer to crash a bRPC Redis client process by returning a deeply nested RESP array reply. The parser recursed once for each nested array level without enforcing a depth limit. The fix adds a...

EUVD-2026-107170

Uncontrolled recursion in the Redis reply parser in Apache bRPC 1.18.0 allows a remote Redis server peer to crash a bRPC Redis client process by returning a deeply nested RESP array reply. The parser recursed once for each nested array level without enforcing a depth limit. The fix adds a...

CVE-2026-54425 Apache bRPC: Stack Exhaustion via Recursive HPACK Dynamic Table Size Update Decoding

Uncontrolled recursion in the HTTP/2 HPACK decoder in Apache bRPC before 1.18.0 allows remote attackers to cause denial of service by sending a crafted HTTP/2 header block containing many consecutive Dynamic Table Size Update entries. Each update was decoded by recursively invoking the HPACK...

CVE-2026-54425

Apache bRPC versions before 1.18.0 are vulnerable to a denial of service (DoS) due to uncontrolled recursion (CWE-674) in the HTTP/2 HPACK decoder. An attacker can send a crafted HTTP/2 header block with many consecutive Dynamic Table Size Update entries, causing the decoder to exhaust the thread...

EUVD-2026-107169

Uncontrolled recursion in the HTTP/2 HPACK decoder in Apache bRPC before 1.18.0 allows remote attackers to cause denial of service by sending a crafted HTTP/2 header block containing many consecutive Dynamic Table Size Update entries. Each update was decoded by recursively invoking the HPACK...

CVE-2026-48830

Apache bRPC versions through 1.17.0 are vulnerable to an improper authentication flaw (CWE-287 ). If ServerOptions.auth is enabled and builtin HTTP services are exposed, an unauthenticated remote attacker can send a builtin HTTP request as the first message on an HTTP/1.1 keep-alive connection. T...

CVE-2026-48830 Apache bRPC: HTTP builtin request can mark a connection authenticated and bypass auth for later requests

Improper authentication in Apache bRPC through 1.17.0 allows a remote unauthenticated attacker to bypass authentication for protected non-builtin HTTP endpoints by first sending a builtin HTTP request on the same HTTP/1.1 keep-alive connection. When ServerOptions.auth is enabled and builtin HTTP...

EUVD-2026-107168

Improper authentication in Apache bRPC through 1.17.0 allows a remote unauthenticated attacker to bypass authentication for protected non-builtin HTTP endpoints by first sending a builtin HTTP request on the same HTTP/1.1 keep-alive connection. When ServerOptions.auth is enabled and builtin HTTP...

PT-2026-120570

The MySQL client response parser in Apache bRPC dereferences a null pointer when the server peer sends a zero-payload-length response packet. A response packet whose declared payload length is zero is accepted by the frame-length check is full package, after which the parser reads the response ty...

PT-2026-120559

A Thrift client in Apache bRPC version 1.18.0, built with WITH THRIFT which is off by default can be crashed by the server peer it talks to. When the server returns a T EXCEPTION reply whose exception struct is malformed, the client decodes it without catching what Apache Thrift throws...

PT-2026-120558

Uncontrolled recursion in the mcpack2pb component in Apache bRPC version 1.18.0 on all platforms allows remote attackers to make the server crash via sending deeply nested mcpack data. Root Cause: The bRPC mcpack2pb parser used to serve nshead mcpack / ubrpc / public pbrpc requests recursively...

PT-2026-120563

Use-after-free in the RTMP protocol implementation in Apache bRPC version RtmpChunkStream::SerializeMessage runs concurrently on sender threads and dereferences the same RtmpChunkStream object without synchronization. If a remote peer sends an Abort message naming a chunk stream that is...

PT-2026-120541

A reachable-assertion flaw in the HPACK header-compression decoder of the HTTP/2 h2/gRPC stack in Apache bRPC version = 1 byte + value = 1 byte + 32 bytes of overhead. However, RFC 7541 section 4.1 specifies that the minimum entry size is 33 bytes, because the value may be empty name = 1 byte +...

PT-2026-120528

Uncontrolled recursion in the HTTP/2 HPACK decoder in Apache bRPC before 1.18.0 allows remote attackers to cause denial of service by sending a crafted HTTP/2 header block containing many consecutive Dynamic Table Size Update entries. Each update was decoded by recursively invoking the HPACK...

PT-2026-120546

Unbounded memory accumulation in the stream message reassembly path of Apache bRPC version 1.18.0 on all platforms allows remote attackers to exhaust the memory of a server denial of service by sending an endless sequence of continuation data frames. Root Cause: The streaming RPC protocol bounds...

PT-2026-120540

A heap use-after-free in the RTMP protocol component of Apache bRPC versions 1.18.0 allows a remote attacker to crash a bRPC RTMP server by sending a crafted Abort control message. No authentication or application-level request is required. Root Cause: When an RTMP Abort control message names the...

PT-2026-120557

Enforceable assertion in the streaming feature of Apache bRPC version 0 and unconditionally asserts CHECKbuf.IsEmpty on the frame payload. A feedback frame that carries an unexpected payload, or a feedback frame received on a stream where flow control is disabled cur buf size == 0, reaches these...

PT-2026-120529

Uncontrolled recursion in the Redis reply parser in Apache bRPC 1.18.0 allows a remote Redis server peer to crash a bRPC Redis client process by returning a deeply nested RESP array reply. The parser recursed once for each nested array level without enforcing a depth limit. The fix adds a...

PT-2026-120535

Apache bRPC versions before 1.18.0 do not consistently enforce the configured max body size limit in non-progressive HTTP/1 and HTTP/2 parsing and in memcache and couchbase response parsing. A remote unauthenticated peer can cause an affected process to buffer message data beyond the configured...

PT-2026-120545

An out-of-bounds read vulnerability exists in the streaming RPC client of Apache bRPC versions 1.11.0 through 1.17.0 on all platforms. A client that creates multiple streams in a single RPC expects the server response to carry exactly one extra stream id for every additional stream. The response...