ET WEB_SPECIFIC_APPS Microsoft SharePoint Server Upload Page Folder Path Traversal (CVE-2026-45454)

alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET WEB_SPECIFIC_APPS Microsoft SharePoint Server Upload Page Folder Path Traversal (CVE-2026-45454)";
    flow:established,to_server;
    http.uri;
    content:"/_layouts/15/Upload.aspx";
    content:"List|3d|";
    content:"RootFolder|3d|";
    http.request_body;
    content:"name|3d 22|ctl00|24|PlaceHolderMain|24|ctl02|24|ctl04|24|InputFile|22 3b|"; fast_pattern;
    http.method;
    content:"POST";
    reference:url,aretiq.ai/research/vul260531-cve-2026-45454-microsoft-sharepoint-server-upload-page-folder-path-traversal/;
    classtype:web-application-attack;
    sid:2069966; rev:1;
    metadata:affected_product Microsoft_Sharepoint, attack_target Server, tls_state TLSDecrypt, created_at 2026_06_16, cve CVE_2026_45454, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag Exploit, updated_at 2026_06_16, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)