WordPress Plugin Vulnerabilities
Popup Builder < 4.2.0 - Admin+ Stored Cross-Site Scripting
Description
The plugin does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).
Note: The vendor was made aware of the issue on June 14 and 28, 2023
Proof of Concept
1. Click on "Add New", and select the image popup. 2. Navigate to "Settings" and enable the "Floating Button" option. 3. Enter the XSS payload in the Text field: `<a href=javascript:alert(document.cookie)>Click Here</a>` 4. Clicking on the button will get the popup. This XSS payload works on WordPress Admin.
Affects Plugins
Fixed in 4.2.0 References
CVE
Classification
Type
XSS
OWASP top 10
CWE
CVSS
Miscellaneous
Original Researcher
Dipak Panchal (th3.d1pak)
Submitter
Dipak Panchal (th3.d1pak)
Submitter twitter
Verified
Yes
WPVDB ID
Timeline
Publicly Published
2023-08-28 (about 8 months ago)
Added
2023-08-30 (about 8 months ago)
Last Updated
2023-12-14 (about 4 months ago)
WPScan 