WP Compress – Image Optimizer [All-In-One] <= 6.20.01 - Open Redirect via css

URL Redirection to Untrusted Site ('Open Redirect')
CVE CVE-2023-6812
CVSS 4.3 (Medium)
Publicly Published May 13, 2024
Last Updated May 14, 2024
Researcher Krzysztof Zając - CERT PL


The WP Compress – Image Optimizer [All-In-One plugin for WordPress is vulnerable to Open Redirect in all versions up to, and including, 6.20.01. This is due to insufficient validation on the redirect url supplied via the 'css' parameter. This makes it possible for unauthenticated attackers to redirect users to potentially malicious sites if they can successfully trick them into performing an action.



Vulnerability Details for WP Compress – Instant Performance & Speed Optimization

Software Type Plugin
Software Slug wp-compress-image-optimizer (view on wordpress.org)
Patched? Yes
Remediation Update to version 6.20.02, or a newer patched version
Affected Version
  • <= 6.20.01
Patched Version
  • 6.20.02

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