CVE-2026-47844: Broadcom Reactor Netty

Low severity, CVSS 3.7. EPSS: 0.2% chance of exploitation in the next 30 days.

In specific scenarios, the Reactor Netty HTTP Server may leak exception details across unrelated requests. In order for this to happen, the server must be configured with Brave Tracing. 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 2026-08-26. Last modified 2026-09-04.