WP Responsive Images - Path Traversal (CVE-2026-1557)

CVE-2026-1557 is a path traversal vulnerability in the WP Responsive Images plugin for WordPress, affecting all versions up to and including 1.0. This flaw allows unauthenticated attackers to exploit the 'src' parameter to read arbitrary files on the server, potentially exposing sensitive information such as configuration files or credentials.

CrowdSec has been tracking this vulnerability and its exploits since 1st of April 2026.

According to CrowdSec data, while opportunistic exploitation dominates, a portion of threat actors trying to exploit CVE-2026-1557 apply basic targeting methods such as port or service detection. This indicates emerging patterns of selective targeting. In addition, according to the CrowdSec network, attack volume against CVE-2026-1557 has dipped slightly compared to the previous week. Although still commonly targeted, the decline suggests a cooling-off period. Long-term relevance remains, but attention is waning.

Attackers exploit the WP Responsive Images plugin by sending requests to /wp-content/plugins/wp-responsive-images/image_handler.php with the src parameter set to sensitive file paths, such as /wp-config.php, to read arbitrary files from the server.