alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-111915 Yank Note - Path Traversal"; flow:established,to_server; http.method; content:"GET"; http.uri.raw; content:"/api/help"; nocase; fast_pattern; pcre:"/[?&](?:path|doc)=[^&]*(?:\.\.(?:\x2f|%2f)|%2e%2e)/i"; classtype:web-application-attack; reference:cve,CVE-2026-111915; reference:url,https://www.exploit.observer/?keyword=CVE-2026-111915&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=yank-note&match=exact; sid:1084200; rev:1;)