CVE-2026-58064 Apache bRPC: Denial of Service via Unbounded Redis Inline Command Allocation
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-58064?
CVE-2026-58064 is a vulnerability in Apache bRPC, published on 21 Oct 2026.
Official description
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.
Weakness: CWE-770
Which versions are affected by CVE-2026-58064?
How do I fix CVE-2026-58064?
No fix has been published for CVE-2026-58064 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-58064 being exploited?
There is no known exploitation of CVE-2026-58064 in the wild and no public exploit code.
Sources
Also known as GHSA-m3mv-32pp-6vgx.