WP Meta SEO <= 4.5.2 - Missing Authorization in 'startProcess' to Arbitrary Redirect via 'update_link_redirect' task

7.1
Missing Authorization
CVE CVE-2023-0876
CVSS 7.1 (High)
Publicly Published February 24, 2023
Last Updated January 22, 2024
Researcher dc11

Description

The WP Meta SEO plugin for WordPress is vulnerable to unauthorized execution of tasks due to a missing capability check on the startProcess function in versions up to, and including, 4.5.2. This makes it possible for authenticated attackers with subscriber-level access to perform tasks reserved for administrators such as post modifications. This vulnerability occurred as a result of the plugin relying on nonce checks as a means of access control, and that nonce being accessible to all authenticated users regardless of role. Attackers could leverage this to redirect victims to an arbitrary location by setting the link_redirect location through the update_link_redirect task.

Wordfence blocked 38 attacks targeting this vulnerability in the past 24 hours.

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Vulnerability Details for WP Meta SEO

Software Type Plugin
Software Slug wp-meta-seo (view on wordpress.org)
Patched? Yes
Remediation Update to version 4.5.3, or a newer patched version
Affected Version
  • <= 4.5.2
Patched Version
  • 4.5.3

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