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Stored Cross-Site Scripting Vulnerability Patched in Newsletter WordPress Plugin

September 6, 2023

On August 16, 2023, our Wordfence Threat Intelligence team identified and began the responsible disclosure process for a stored Cross-Site Scripting (XSS) vulnerability in the Newsletter plugin, which is actively installed on more than 300,000 WordPress websites. The vulnerability enables threat actors with contributor-level permissions or higher to inject malicious web scripts into pages using the plugin’s shortcode.

This post was originally published on Wordfence by István Márton.
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