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.
Published: 2025-12-23
Score: 6.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 23 Dec 2025 23:00:00 +0000

Type Values Removed Values Added
First Time appeared Kieranoshea
Kieranoshea calendar
Wordpress
Wordpress wordpress
Vendors & Products Kieranoshea
Kieranoshea calendar
Wordpress
Wordpress wordpress

Tue, 23 Dec 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 23 Dec 2025 09:30:00 +0000

Type Values Removed Values Added
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.
Title Calendar <= 1.3.16 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'event_desc'
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


Subscriptions

Kieranoshea Calendar
Wordpress Wordpress
cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-04-08T16:44:22.393Z

Reserved: 2025-12-11T18:51:52.835Z

Link: CVE-2025-14548

cve-icon Vulnrichment

Updated: 2025-12-23T15:28:43.151Z

cve-icon NVD

Status : Deferred

Published: 2025-12-23T10:15:43.847

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-14548

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-23T22:39:41Z

Weaknesses