Checkmk 2.5 extension that shows for every Brotli decoder on a Linux host (system libbrotlidec, Node.js, Python Brotli/brotlicffi, .NET runtime) whether it is affected by Broccoli2Shell (CVE-2026-111497): fixed by version or distribution backport, Node.js and Python extensions judged by the system library they are linked against, and processes still running a replaced decoder. Tested on 17 distribution and image setups, Checkmk 2.5 and 3.0 daily.

Disclaimer
I did not develop this MKP officially as an employee of Checkmk GmbH, but rather as a private individual.