CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
What the vulnerability does
The Contextual Related Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'other_attributes' parameter in versions up to, and including, 4.2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
Contextual Related Posts versions 4.2.1 and earlier contain a cross-site scripting vulnerability that allows authenticated users to inject malicious scripts. The vulnerability has a changed scope, meaning the impact can extend beyond the vulnerable component itself. Site administrators should update to a version newer than 4.2.1 to mitigate this risk.
What an attacker can do
Inject and execute malicious JavaScript in the site, affecting other users and potentially the site itself.
Potential impact on your site
Authenticated users can inject scripts that execute in other users' browsers, potentially stealing data or modifying site content.
Conditions required to exploit
Attacker must have a low-privilege user account (e.g., contributor or subscriber role) on the site.
Key dates
External resources
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