Asgaros WordPress plugin - SQLi (CVE-2021-24827)

CVE-2021-24827 is a critical vulnerability in the Asgaros Forum WordPress plugin that allows unauthenticated attackers to perform SQL injection by sending crafted requests during the topic subscription process.

CrowdSec has been tracking this vulnerability and its exploits since 10th of March 2025.

CrowdSec network observations suggest that most exploitation of CVE-2021-24827 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. Telemetry from the CrowdSec network also shows that exploitation activity for CVE-2021-24827 remains steady week-over-week. Attack volumes are consistent with long-term trends, indicating sustained interest from threat actors. CVE-2021-24827 continues to be an active part of the threat landscape and will likely remain this way for the forseeable future.

Observed attack attempts are characterized by requests made to URLs including /forum/?subscribe_topic=.