WordPress Plugin Vulnerabilities
W4 Post List < 2.4.6 - 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
On a post, add a "W4 Post List" block, select a list and put the following payload in the "Additional CSS class(es)" 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 2.4.6 References
CVE
Classification
Type
XSS
OWASP top 10
CWE
CVSS
Miscellaneous
Original Researcher
Lana Codes
Submitter
Lana Codes
Submitter website
Submitter twitter
Verified
Yes
WPVDB ID
Timeline
Publicly Published
2023-03-22 (about 1 years ago)
Added
2023-03-22 (about 1 years ago)
Last Updated
2023-03-22 (about 1 years ago)
WPScan 