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Responsive WordPress Slider <= 2.2.0 - Subscriber+ Stored Cross-Site Scripting

Description

The plugin does not sanitise and escape some of the Slider options, allowing Cross-Site Scripting payloads to be set in them. Furthermore, as by default any authenticated user is allowed to create Sliders (https://wordpress.org/support/topic/slider-can-be-changed-from-any-user-even-subscriber/, such settings can be changed in the plugin's settings), this would allow user with a role as low as subscriber to perform Cross-Site Scripting attacks against logged in admins viewing the slider list and could lead to privilege escalation by creating a rogue admin account for example. Timeline July 19th, 2021 - Details sent to vendor July 21st, 2021 - Vendor working on a patch August 11th, 2021 - Asked for update August 12th, 20121 - Ticket handler will follow up with dev September 21st, 2021 - No update, public disclosure


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