ET WEB_SPECIFIC_APPS Oracle WebLogic Server Proxy Plug-in Authentication Bypass (CVE-2026-21962)
Sourceet/open
CreatedJanuary 29, 2026
UpdatedJanuary 29, 2026
Classificationweb-application-attack
alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Oracle WebLogic Server Proxy Plug-in Authentication Bypass (CVE-2026-21962)"; flow:established,to_server; http.uri; content:"/bea_wls_internal/ProxyServlet"; fast_pattern; pcre:"/(?:\x2e|\x252[eE]){2}(?:\x3b|\x253[bB])(?:\x2f|\x252[fF])bea_wls_internal\x2fProxyServlet/U"; http.header; content:"|3b|y21kO"; reference:url,isc.sans.edu/diary/Odd+WebLogic+Request+Possible+CVE202621962+Exploit+Attempt+or+AI+Slop/32662; reference:cve,2026-21962; classtype:web-application-attack; sid:2067187; rev:1; metadata:affected_product Oracle_WebLogic, attack_target Server, tls_state TLSDecrypt, created_at 2026_01_29, cve CVE_2026_21962, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Exploit, updated_at 2026_01_29, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)
References
Metadata
affected productOracle_WebLogic
attack targetServer
tls stateTLSDecrypt
created at2026_01_29
deploymentSSLDecrypt
confidenceMedium
signature severityMajor
tagExploit
updated at2026_01_29
mitre tactic idTA0001
mitre tactic nameInitial_Access
mitre technique idT1190
mitre technique nameExploit_Public_Facing_Application
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