What’s Vulnerable › Vulnerabilities

CVE-2023-6812: WP Compress – Image Optimizer [All-In-One] <= 6.20.01 - Open Redirect via css

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-14 · updated 2026-06-17
• Weakness: CWE-601

Description

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.

Affected products

• aresit WP Compress – Instant Performance & Speed Optimization: before 6.20.02 — fixed in 6.20.02

How to fix

Upgrade to a fixed version: aresit WP Compress – Instant Performance & Speed Optimization 6.20.02. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset/3082085/wp-compress-image-optimizer/trunk/fixCss.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/cbbf9fbb-74fd-42eb-a781-2a720fe56b13?source=cve
• https://plugins.trac.wordpress.org/changeset/3082085/wp-compress-image-optimizer/trunk/fixCss.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/cbbf9fbb-74fd-42eb-a781-2a720fe56b13?source=cve

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