CP Multi View Events Calendar <= 1.4.42 - Unauthenticated Stored Cross-Site Scripting via Event Title
- ID
- WPSEC-2026-1106
- Plugin
- CP Multi View Events Calendar (cp-multi-view-calendar)
- Affected
- all versions before 1.4.43
- Remediation
- Update to 1.4.43 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Low · Affected versions None seen among sites WPSec scans, 2026-10-16
- Attack surface
- CP Multi View Events Calendar on WPSec AttackSurface
- Fix released
- Published
Description
The CP Multi View Events Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the event title in all versions up to, and including, 1.4.42. Titles are stored with sanitize_text_field(), which keeps quote characters. The client-side htmlEscape() helper in jquery.calendar.js removes some tags and event-handler attributes but does not encode quotes, and the calendar templates place the title inside HTML attributes (title1="${title}", title="${title}"). This makes it possible for authenticated attackers with Subscriber-level access and above, and for unauthenticated attackers when a calendar view has public editing enabled, to inject arbitrary web scripts that run whenever a user views the calendar.
References
- https://wpsec.com/vuln/WPSEC-2026-1106/
- https://plugins.svn.wordpress.org/cp-multi-view-calendar/tags/1.4.43/
- https://wordpress.org/plugins/cp-multi-view-calendar/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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