EWWW Image Optimizer - Information Disclosure (CVE-2023-40600)

CVE-2023-40600 is an information disclosure vulnerability in the EWWW Image Optimizer plugin by Exactly WWW, affecting versions up to 7.2.0 when debug logging is enabled. This flaw could allow unauthorized actors to access sensitive information exposed in debug logs, potentially aiding in further attacks or reconnaissance against affected WordPress sites.

CrowdSec has been tracking this vulnerability and its exploits since 25th of March 2026.

Data from the CrowdSec community indicates that exploitation of CVE-2023-40600 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-2023-40600 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 requesting the /wp-content/ewww/debug.log endpoint, attempting to access sensitive debug information exposed by the EWWW Image Optimizer plugin when debug logging is enabled.