mod_http2 (httpd 2.4.55-2.4.70) assign_headers() heap corruption -> RCE; AlmaLinux has no fixed httpd yet. Nothing in WHP uses HTTP/2 inside a container (HAProxy edge terminates h2/h3 and speaks HTTP/1.1 to backends), so uninstall mod_http2 (and mod_md if ever present) from cac, cac-fpm and shared-httpd. scripts/httpd-h2-md-gate.sh fails the build if http2_module, proxy_http2_module or md_module is loadable or `httpd -t` fails, writes /etc/whp-httpd-version and the images get LABEL org.whp.httpd-h2-md=removed. Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_0185ukXjXyosSkunDsdWz3mb