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CVE-2026-82210— Apache bRPC: Remote denial of service (crash) via malformed stream feedback frames

Quick assessment

Affected
Apache Software Foundation Apache bRPC
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Apache bRPC（版本低于 1.18.0）的流式传输功能中，存在一个可被触发的断言（enforceable assertion），该问题影响所有平台。远程攻击者可通过发送格式错误的流反馈帧（stream feedback frame），导致服务器进程崩溃。 根本原因： 当处理 FRAME_TYPE_FEEDBACK 类型的帧时，bRPC 会调用 Stream::SetRemoteConsumed() 函数。该函数中包含断言 CHECK(_cur_buf_size > 0)，并且无条件地对帧负载执行断言 C

AI Predicted 5.9 Difficulty: Easy

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-82210

Vulnerability Information
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Vulnerability Title
Apache bRPC: Remote denial of service (crash) via malformed stream feedback frames
Source: CVE Program / CVE List V5
Vulnerability Description
Enforceable assertion in the streaming feature of Apache bRPC (version < 1.18.0) on all platforms allows a remote attacker to crash the server process by sending a malformed stream feedback frame. Root Cause: When handling FRAME_TYPE_FEEDBACK frames, bRPC calls Stream::SetRemoteConsumed() which contains CHECK(_cur_buf_size > 0) and unconditionally asserts CHECK(buf.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 assertions. On failure, CHECK failures abort the process, allowing an unauthenticated single client (once a stream is established) to terminate the server and cause a denial of service. Affected Scenarios: Use bRPC server with the streaming control feature (Stream API) served from untrusted network. How to Fix: 1. Upgrade bRPC to version 1.18.0, which fixes this issue. 2. Apply this patch: https://github.com/apache/brpc/pull/3494 The fix rejects malformed feedback frames with EPROTO and closes only the affected stream instead of crashing the whole process, and it bounds buffer shrinking so cur_buf_size never drops to 0 while flow control is enabled.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
可达断言
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache bRPC 0 ~ 1.18.0 -

II. Public POCs for CVE-2026-82210

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III. Intelligence Information for CVE-2026-82210

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Other References for CVE-2026-82210 (1)

Same Patch Batch · Apache Software Foundation · 2026-10-21 · 39 CVEs total

CVE-2026-56386 Apache bRPC: Integer Underflow and Out-of-Bounds Read in HTTP/2 DATA Frame Parser
CVE-2026-74758 Apache bRPC: Heap Use-After-Free in RTMP Abort Message Handling
CVE-2026-74757 Apache bRPC: Uncontrolled Memory Allocation via Malicious mcpack Array Item Count
CVE-2026-74755 Apache bRPC: Integer Underflow in mcpack2pb Parser Leading to Denial of Service
CVE-2026-66392 Apache bRPC: TLS Client Accepts Certificates for Mismatched Peer Names
CVE-2026-61916 Apache bRPC: Out-of-bounds Read in URL and Header Lookup Tables on Unsigned-char Platforms
CVE-2026-61902 Apache bRPC: Memory Exhaustion Through Inconsistent Message Body Limits
CVE-2026-58064 Apache bRPC: Denial of Service via Unbounded Redis Inline Command Allocation
CVE-2026-56388 Apache bRPC: Out-of-Bounds Write in Redis Command Parser
CVE-2026-56387 Apache bRPC: Remote Memory Exhaustion in RTMP AMF Parser
CVE-2026-78048 Apache bRPC: Remote Denial of Service via Out-of-Bounds Dynamic Table Sizing in HPACK Deco
CVE-2026-54427 Apache bRPC: Stack Exhaustion via Unbounded Recursion in AMF Parser
CVE-2026-54426 Apache bRPC: Stack Exhaustion via Unbounded Recursion in Redis Reply Parser
CVE-2026-54425 Apache bRPC: Stack Exhaustion via Recursive HPACK Dynamic Table Size Update Decoding
CVE-2026-48830 Apache bRPC: HTTP builtin request can mark a connection authenticated and bypass auth for
CVE-2026-59229 Apache IoTDB: Legacy Pipe Privilege Escalation
CVE-2026-59562 Apache IoTDB: Remote code execution and Unauthenticated path traversal in legacy pipe send
CVE-2026-41114 Apache IoTDB JDBC driver: Large-scale Memory Exhaustion via BigDecimal toPlainString in JD
CVE-2026-58663 Apache IoTDB: Auth Bypass in pipeTransfer() interface
CVE-2026-82425 Apache bRPC: Reachable Assertion in Socket::OnInputEvent Allows Remote Denial of Service

Showing top 20 of 39 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Apache bRPC
Same vendor: Apache Software Foundation
Same weakness: CWE-617

V. Comments for CVE-2026-82210

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