alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-63179 Winter CMS - LESS @import Arbitrary File Read via backend settings"; flow:established,to_server; http.method; content:"POST"; http.request_body; content:"@import"; nocase; fast_pattern; pcre:"/@import[^\r\n]{0,80}(\.env|\x2fetc\x2f|\.\.[\x2f\x5c])/i"; classtype:web-application-attack; reference:cve,CVE-2026-63179; reference:url,https://www.exploit.observer/?keyword=CVE-2026-63179&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=wintercms&match=exact; sid:1099412; rev:1;)