Description
The Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'event_desc' parameter in all versions up to, and including, 1.3.16 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page, granted they can convince an administrator to enable lower privilege users to manage calendar events via the plugin settings.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
kieranoshea Calendar
Default version status: unaffected
0 to ≤ 1.3.16affected
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2e61489d-a433-4d44-bb12-8c84204922b9?source=cve ↗
- https://plugins.trac.wordpress.org/browser/calendar/trunk/calendar.php#L2154 ↗
- https://plugins.trac.wordpress.org/browser/calendar/trunk/calendar.php#L899 ↗
- https://plugins.trac.wordpress.org/changeset?new=3419088%40calendar%2Ftrunk&old=3122280%40calendar%2Ftrunk ↗