alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET WEB_SPECIFIC_APPS Gitea Unauthenticated Arbitrary File Read (CVE-2026-59774)"; flow:established,to_server; http.uri; content:"/markup"; http.request_body; content:"mode|3d|file"; fast_pattern; content:"test|3d|"; pcre:"/^%(?:25)?23%(?:25)?2[bB]INCLUDE%(?:25)?3[aA]/R"; http.method; content:"POST"; reference:url,github.com/go-gitea/gitea/security/advisories/GHSA-6v53-hr58-556r; reference:cve,2026-59774; classtype:attempted-user; sid:2071776; rev:1; metadata:affected_product Gitea, attack_target Server, tls_state TLSDecrypt, created_at 2026_08_24, cve CVE_2026_59774, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2026_08_24, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)