---
id: CVE-2026-58064
title: 'Apache bRPC: Denial of Service via Unbounded Redis Inline Command Allocation'
summary: >-
  The Redis protocol implementation in Apache bRPC allowed inline command
  parsing to allocate and copy the full connection buffer before a complete
  CRLF-terminated command was available. A remote attacker with access to a
  Redis-protocol bR…
severity: none
cwe:
  - CWE-770
vendor: Apache Software Foundation
product: apache/brpc
affected:
  - apache/brpc < 1.18.0
published: '2026-10-21'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T11:41:13.666Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-58064'
references:
  - url: 'https://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgb'
tags:
  - cve.org
ingestedAt: '2026-10-21T12:48:53.765Z'
---

## Overview

The Redis protocol implementation in Apache bRPC allowed inline command parsing to allocate and copy the full connection buffer before a complete CRLF-terminated command was available. A remote attacker with access to a Redis-protocol bRPC service could send long inline inputs without a terminating CRLF to increase memory usage and CPU copy overhead, potentially causing denial of service.


Root Cause:
The Redis inline command parser allocated memory based on the current input buffer size and copied the entire buffer before determining the current inline command boundary. The existing redis_max_allocation_size limit was applied to RESP bulk strings and arrays, but not effectively to the inline command path before allocation.


Affected Scenarios:
Use Apache bRPC server with Redis protocol enabled and reachable by untrusted clients.


How to Fix:
1. Upgrade Apache bRPC to version 1.18.0, which fixes this issue.
2. Apply the patch from PR  https://github.com/apache/brpc/pull/3363 .


Note:
The fix applies redis_max_allocation_size to Redis inline command lines and scans for CRLF before allocating parser arena memory. Inline command lines exceeding this limit are rejected.

## Affected

- `apache/brpc < 1.18.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.