WordPress Plugin Vulnerabilities
Modern Events Calendar Lite < 5.22.2 - Admin+ Stored Cross-Site Scripting
Description
The plugin does not escape some of its settings before outputting them in attributes, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.
Proof of Concept
Go to the plugin Settings > Messages > Taxonomies (/wp-admin/admin.php?page=MEC-settings&tab=MEC-messages) Put the following payload in the Category Plural Label, Category Plural Label or Label Plural Label fields: "><script>alert(/XSS/)</script> The XSS will be triggered in any backend pages
Affects Plugins
Fixed in 5.22.2 References
CVE
Classification
Type
XSS
OWASP top 10
CWE
CVSS
Miscellaneous
Original Researcher
Shivam Rai
Submitter
Shivam Rai
Submitter twitter
Verified
Yes
WPVDB ID
Timeline
Publicly Published
2021-09-06 (about 2 years ago)
Added
2021-09-06 (about 2 years ago)
Last Updated
2023-01-29 (about 1 years ago)
WPScan 