The plugin does not escape its Image URL button setting, which could lead allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.
Add the following payload in the Universal Button > Image URL settings: " onerror=alert(/XSS/) "
The XSS will be triggered in all frontend posts
2021-08-10 (about 1 years ago)
2021-10-06 (about 10 months ago)
2022-04-09 (about 4 months ago)