CVE Watch30 de out. de 2026

CVE-2026-82210

Enforceable assertion in the streaming feature of Apache bRPC (version < 1.18.0) on all platforms allows a remote attacker to crash the serv

CVSS

7.5

Alta

EPSS

0.5%

p43

KEV

—

Exploit Today

0-100

Publicado: 21 de out. de 2026 · Última mod.: 30 de out. de 2026 · CWE-617

EPSS · 30d

0.2%EPSS · 30 dias0.5%

2026-10-222026-11-07

Descrição técnica

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.

Referências oficiais

lists.apache.orghttps://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgb

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