WordPress Plugin Vulnerabilities
Scriptless Social Sharing < 3.2.2 - Contributor+ Stored XSS
Description
The plugin does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
Proof of Concept
Add a "Scriptless Social Sharing" Gutenberg block to a post and put the following payload in the "Additional CSS class(es)" advanced block option: " onmouseover="alert(/XSS/)" style="background:red;" The XSS will be triggered when previewing/viewing the post and moving the mouse over the red block
Affects Plugins
Fixed in version 3.2.2
References
Classification
Miscellaneous
Original Researcher
Lana Codes
Submitter
Lana Codes
Submitter website
Submitter twitter
Verified
Yes
Timeline
Publicly Published
2023-02-09 (about 3 months ago)
Added
2023-02-09 (about 3 months ago)
Last Updated
2023-02-09 (about 3 months ago)