DedeCMS - SQLi (CVE-2017-17731)

CVE-2017-17731 is a critical SQL injection vulnerability in DedeCMS through version 5.7, where attackers can exploit the $_FILES superglobal in plus/recommend.php. This flaw allows remote, unauthenticated attackers to execute arbitrary SQL commands, potentially leading to full compromise of the database, data theft, or manipulation.

CrowdSec has been tracking this vulnerability and its exploits since 5th of August 2025.

Data from the CrowdSec community indicates that exploitation of CVE-2017-17731 is highly selective and intelligence-driven. Threat actors use advanced reconnaissance and carefully choose their targets, often as part of sophisticated campaigns or advanced persistent threat operations. CrowdSec network telemetry also shows that exploitation of CVE-2017-17731 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 this vulnerability by sending crafted GET requests to /plus/recommend.php with malicious SQL payloads in the _FILES[type][tmp_name] parameter, attempting to execute arbitrary SQL commands.