CISA Adds Oracle WebLogic Proxy Plug-in Flaw CVE-2026-21962 to KEV Catalog After Confirmed Exploitation
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has warned that a vulnerability in the Oracle WebLogic Server Proxy Plug-in (mod_wl_ohs) is being actively exploited in the wild.
On August 24, 2026, CISA added the access-control flaw tracked as CVE-2026-21962 to its Known Exploited Vulnerabilities (KEV) catalog. The affected module enables web servers to proxy requests to Oracle WebLogic Server and is distributed with Oracle HTTP Server.
Equivalent plug-ins for Apache HTTP Server and IIS are also impacted. The vulnerability can be exploited remotely without authentication, allowing attackers to modify or delete data, inject malicious content, and leak sensitive information from the web server and any connected backend systems.
Security researchers note that successful exploitation could grant attackers broad control over proxied resources and potentially pivot into Oracle WebLogic environments. Organizations are urged to apply available mitigations or disable the plug-in where possible until patches are deployed.
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