CVE-2026-82231 Apache bRPC: Malformed Thrift T_EXCEPTION reply causes process termination in Thrift client
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-82231?
CVE-2026-82231 is a vulnerability in Apache bRPC, published on 21 Oct 2026.
Official description
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 (TProtocolException, TTransportException or std::length_error). The exception unwinds out of the bthread task function and the process calls std::terminate(), terminating the whole process along with every other in-flight RPC.
This is the client response path, so the adversary is the server peer, which THREAT_MODEL.md treats as untrusted. It requires a WITH_THRIFT build (off by default).
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/3500
Weakness: CWE-248
Which versions are affected by CVE-2026-82231?
How do I fix CVE-2026-82231?
No fix has been published for CVE-2026-82231 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-82231 being exploited?
There is no known exploitation of CVE-2026-82231 in the wild and no public exploit code.
Sources
Also known as GHSA-4xj2-88x8-3w8g.