alert http $EXTERNAL_NET any -> $HTTP_SERVERS $HTTP_PORTS (msg:"VEDAS CVE-2026-102244 SurfSense - Server-Side Request Forgery via note export embedded resource"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/notes"; nocase; fast_pattern; http.request_body; content:"source_markdown"; nocase; pcre:"/\x5d\x28\s*(?:file|gopher|dict|ftp)\x3a\x2f\x2f|\x5d\x28\s*https?\x3a\x2f\x2f(?:127\.|0\.0\.0\.0|localhost|169\.254\.169\.254|10\.|192\.168\.|172\.(?:1[6-9]|2[0-9]|3[01])\.|\x5b)/i"; classtype:web-application-attack; reference:cve,CVE-2026-102244; reference:url,https://www.exploit.observer/?keyword=CVE-2026-102244&match=exact; reference:url,https://subdomain.center/?engine=ammonites&keyword=surfsense&match=exact; sid:1095205; rev:1;)