WordPress Plugin Vulnerabilities
Google XML Sitemaps < 4.1.3 - Admin+ Stored Cross-Site Scripting
Description
The plugin does not sanitise and escape a settings before outputting it in the Debug page, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)
Proof of Concept
Put the following payload in the "Try to increase the memory limit to" settings of the plugin: <script>alert(/XSS/)</script> The XSS will be triggered when accessing the Debug Function, e.g: https://example.com/wp-admin/options-general.php?page=google-sitemap-generator%2Fsitemap.php&sm_rebuild=true&sm_do_debug=true&_wpnonce=3e59e7544a
Affects Plugins
Fixed in version 4.1.3
References
Classification
Miscellaneous
Original Researcher
ZhongFu Su(JrXnm) of Wuhan University
Submitter
ZhongFu Su(JrXnm) of Wuhan University
Submitter website
Submitter twitter
Verified
Yes
Timeline
Publicly Published
2022-05-30 (about 4 months ago)
Added
2022-05-30 (about 4 months ago)
Last Updated
2022-09-26 (about 2 days ago)