# CVE-2026-82231: Apache bRPC Thrift client denial of service

Source: https://junglewise.ai/threats/cve-2026-82231-a-thrift-client-in-apache-brpc-version-1-18-0-built-with-with  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-21. Updated: 2026-10-21  
License: CC BY 4.0 with a link back

CVE-2026-82231 · Severity: info · Published 2026-10-21

Apache bRPC is an open-source remote procedure call (RPC) framework used for service-to-service communication. When built with Thrift support (off by default), a malicious or compromised server can send malformed responses that crash the entire bRPC client process, disrupting all in-flight communication and causing denial of service. This affects deployments that enable the optional Thrift support.

Technologies: [Apache Brpc](https://junglewise.ai/threats/technologies/brpc). Vendors: [Apache](https://junglewise.ai/threats/vendors/apache).

## Quick answers

**Is CVE-2026-82231 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-82231 being exploited in the wild.

**How severe is CVE-2026-82231?** Informational severity, published 21 October 2026.

**Which products and versions are affected?** Apache Brpc < 1.18.0 (with WITH_THRIFT build flag enabled).

**Is there a fix for CVE-2026-82231?** Yes: fixed in 1.18.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-82231 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-82231?** Check whether you run Apache Brpc at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 1.18.0

## Technical details

A Thrift client in Apache bRPC versions below 1.18.0 fails to catch exceptions (TProtocolException, TTransportException, or std::length_error) thrown by Apache Thrift when decoding a malformed T_EXCEPTION reply from the server peer. The unhandled exception unwinds out of the bthread task function, invoking std::terminate() and crashing the entire process. The vulnerability requires WITH_THRIFT build flag enabled and the adversary is the untrusted server peer.

## Affected products

- Apache bRPC < 1.18.0 (with WITH_THRIFT build flag enabled)

## Timeline

- 2026-10-21: advisory
- 2026-10-21: patched

## References

- [https://github.com/](https://github.com/)
- [https://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgb](https://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgb)

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