Image Optimizer by wps.sk vulnerability

The Image Optimizer by wps.sk plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.2.0. This is due to missing or incorrect nonce validation on the imagopby_ajax_optimize_gallery() function. This makes it possible for unauthenticated attackers to trigger bulk optimization via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Published 5 Dec 2025Updated 18 Oct 20263 sources
CVSS 4.3

What happened

The Image Optimizer by wps.sk plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.2.0. This is due to missing or incorrect nonce validation on the imagopby_ajax_optimize_gallery() function. This makes it possible for unauthenticated attackers to trigger bulk optimization via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected versions

Image Optimizer by wps.sk: 0 through 1.2.0 (semver) Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

  • Apply vendor-provided updates or mitigations.
  • Review affected product exposure and access logs.

Public PoC references

No public PoC reference has passed the current publication threshold.