ET WEB_SPECIFIC_APPS WordPress Plugin Gravity SMTP Unauthenticated REST API (CVE-2026-4020)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/wp-json/gravitysmtp/v1/tests/mock-data"; fast_pattern;
content:"page=gravitysmtp-settings";
target:dest_ip;
Raw source ET WEB_SPECIFIC_APPS WordPress Plugin Gravity SMTP Unauthenticated REST API (CVE-2026-4020) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http any any -> [$HOME_NET,$HTTP_SERVERS] any (
    msg:"ET WEB_SPECIFIC_APPS WordPress Plugin Gravity SMTP Unauthenticated REST API (CVE-2026-4020)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/wp-json/gravitysmtp/v1/tests/mock-data"; fast_pattern;
    content:"page=gravitysmtp-settings";
    reference:cve,2026-4020;
    classtype:web-application-attack;
    sid:2069346; rev:1;
    metadata:affected_product Wordpress_Plugins, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_05_19, cve CVE_2026_4020, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence High, signature_severity Major, tag SMTP, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2026_05_19, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application;
    target:dest_ip;
)

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