Security Advisory

CVE-2021-39357

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2021-10-21 19:38:30

Last updated 2025-02-14 17:55:12

Assigner Wordfence

State PUBLISHED

Description

The Leaky Paywall WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via the ~/class.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 4.16.5. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.

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