Modern Events Calendar Lite: Cross-site scripting
Modern Events Calendar Lite is affected by cross-site scripting. The vulnerable path is reachable without authentication. Injected script can execute in the affected site's origin when the vulnerable output is viewed.
- Component
- Modern Events Calendar Lite
- Plugin slug
modern-events-calendar-lite- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Dec 13, 2021
This CVE was published Dec 13, 2021 and is one of 17 known issues for this plugin.
Update, patch or deactivate.
Update Modern Events Calendar Lite to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Modern Events Calendar Lite WordPress plugin before 6.1.5 does not sanitise and escape the current_month_divider parameter of its mec_list_load_more AJAX call (available to both unauthenticated and authenticated users) before outputting it back in the response, leading to a Reflected Cross-Site Scripting issue
NVD vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N