ET WEB_SPECIFIC_APPS IBM Langflow Auto-Login Bypass (CVE-2026-9198)

Query · suricata

flow:established,to_server;
http.uri;
content:"/api/v1/auto_login"; fast_pattern;
http.header_names;
content:!"authorization|0d 0a|"; nocase;
target:dest_ip;
Raw source ET WEB_SPECIFIC_APPS IBM Langflow Auto-Login Bypass (CVE-2026-9198) · Suricata
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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 IBM Langflow Auto-Login Bypass (CVE-2026-9198)";
    flow:established,to_server;
    http.uri;
    content:"/api/v1/auto_login"; fast_pattern;
    http.header_names;
    content:!"authorization|0d 0a|"; nocase;
    reference:url,github.com/advisories/GHSA-5wm9-vgmg-cjv6;
    reference:cve,2026-9198;
    classtype:attempted-user;
    sid:2071355; rev:1;
    metadata:affected_product Langflow, attack_target Server, tls_state TLSDecrypt, created_at 2026_07_31, cve CVE_2026_9198, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Exploit, updated_at 2026_07_31, 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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