OFBiz - XXE (CVE-2011-3600)

CVE-2011-3600 is an XML External Entity (XXE) vulnerability in the /webtools/control/xmlrpc endpoint of OFBiz versions 16.11.01 to 16.11.04. This flaw allows remote attackers to exploit DOCTYPE declarations to read sensitive files from the server's filesystem, probe for open network ports, and determine the existence of files based on error messages. Attackers can leverage this vulnerability to conduct information disclosure and reconnaissance attacks against affected OFBiz installations.

CrowdSec has been tracking this vulnerability and its exploits since 14th of January 2026.

CrowdSec network data shows that most actors exploiting CVE-2011-3600 rely on broad, untargeted scans with minimal filtering. The activity is largely automated and opportunistic in nature. CrowdSec network telemetry also shows that exploitation of CVE-2011-3600 has significantly declined over the past week. Attack volumes are well below the long-term average, suggesting attackers are rapidly losing interest. The vulnerability appears to be falling out of active use across most threat landscapes.

Attackers exploit the /webtools/control/xmlrpc endpoint by sending crafted XML payloads containing external entity references, enabling disclosure of sensitive files and probing of internal resources via XML External Entity (XXE) injection.