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.

CrowdSec network observations suggest that most exploitation of CVE-2017-17731 involves focused reconnaissance to identify viable targets. Attackers typically tailor their campaigns based on system exposure and configuration. It is unlikely that a given attack is accidental. Additionally, according to week-over-week analysis by CrowdSec, exploitation of CVE-2017-17731 is surging. Attack volumes are spiking well above historical norms, indicating widespread and escalating interest from threat actors. CVE-2017-17731 is currently experiencing high visibility and active exploitation across the internet.

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.