CVE-2025-14548
Calendar <= 1.3.16 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'event_desc'
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | kieranoshea |
| Product | calendar |
| Published | Dec 23, 2025 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
kieranoshea / Calendar
0 ≤ 1.3.16
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/2e61489d-a433-4d44-bb12-8c84204922b9?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/calendar/trunk/calendar.php#L2154 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/calendar/trunk/calendar.php#L899 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?new=3419088%40calendar%2Ftrunk&old=3122280%40calendar%2Ftrunk
Credits
trung Hieu