CVE-2026-47845: Broadcom Reactor Netty

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

In specific scenarios, Reactor Netty HTTP Server may incorrectly evaluate the remote IP address when HAProxy Protocol is enabled. In order for this to happen, the application must be configured to use HAProxy Protocol. Reactor Netty 1.3.0 - 1.3.6 Reactor Netty 1.1.0 - 1.2.18 Reactor Netty 1.0.52 and earlier

Affected products

• Broadcom Reactor Netty: before 1.0.53 (fixed in 1.0.53); from 1.1.0, before 1.2.19 (fixed in 1.2.19); from 1.3.0, before 1.3.6.1 (fixed in 1.3.6.1)

Published 2026-08-27. Last modified 2026-09-04.