ET WEB_SPECIFIC_APPS OpenCATS Installer Config databaseConnectivity Command Injection Attempt (CVE-2026-27760)

SID: 2069669Rev: 15 views

Sourceet/open

Fileemerging-web_specific_apps.rules

CreatedJune 5, 2026

UpdatedJune 5, 2026

Classificationattempted-admin

alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS OpenCATS Installer Config databaseConnectivity Command Injection Attempt (CVE-2026-27760)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/ajax.php|3f|"; startswith; content:"|3d|install|3a|ui"; fast_pattern; content:"|3d|databaseConnectivity"; http.request_body; content:"|27 29 3b|"; reference:url,chocapikk.com/posts/2026/opencats-installer-rce/; reference:cve,2026-27760; classtype:attempted-admin; sid:2069669; rev:1; metadata:affected_product OpenCATS, attack_target Web_Server, tls_state plaintext, created_at 2026_06_05, cve CVE_2026_27760, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, updated_at 2026_06_05, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)

References

url	chocapikk.com/posts/2026/opencats-installer-rce/
cve	2026-27760

Metadata

affected productOpenCATS

attack targetWeb_Server

tls stateplaintext

created at2026_06_05

cve

CVE-2026-27760

deploymentInternal

performance impactLow

confidenceHigh

signature severityMajor

tagExploit

updated at2026_06_05

mitre tactic idTA0001

mitre tactic nameInitial_Access

mitre technique idT1190

mitre technique nameExploit_Public_Facing_Application

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