alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Roundcube Webmail Cross-Site Scripting (CVE-2024-42009)"; flow:established,to_server; http.request_body; content:"message|3d|"; pcre:"/^.*?\x3cbody\x20[^\x3e]*?\x20on[a-z]+\x3d/R"; content:"email|3d|"; content:"content|3d|html"; fast_pattern; content:"recipient|3d|"; http.method; content:"POST"; reference:url,www.sonarsource.com/blog/government-emails-at-risk-critical-cross-site-scripting-vulnerability-in-roundcube-webmail/; reference:cve,2024-42009; classtype:web-application-attack; sid:2066621; rev:1; metadata:affected_product Roundcube, attack_target Server, tls_state TLSDecrypt, created_at 2026_01_08, cve CVE_2024_42009, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, updated_at 2026_01_08, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)