WordPress Plugin Vulnerabilities
PostX - Gutenberg Post Grid Blocks < 3.0.6 - Reflected Cross-Site Scripting
Description
The plugin does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin
Proof of Concept
Make a logged in admin open the URL below (the post value is the ID of a post/page created with the Site Builder of the plugin) https://example.com/wp-admin/post.php?post=2358&action=edit&postx_type="><img+src%3Dx+onerror%3Dalert(/XSS/)>
Affects Plugins
Fixed in 3.0.6 References
CVE
Classification
Type
XSS
OWASP top 10
CWE
CVSS
Miscellaneous
Original Researcher
Bob Matyas
Submitter
Bob Matyas
Submitter website
Submitter twitter
Verified
Yes
WPVDB ID
Timeline
Publicly Published
2023-08-02 (about 9 months ago)
Added
2023-08-02 (about 9 months ago)
Last Updated
2023-08-02 (about 9 months ago)
WPScan 