CVE-2026-14827

MediumCVSS 6.8

Published: 27/07/2026(UTC)Updated: 27/07/2026(UTC)Translated: 27/07/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.24%

15th percentile - higher than 15% of all known CVEs

Summary

The Calendar WordPress plugin before version 1.3.18 does not properly escape a user-supplied event field before outputting it in an HTML attribute on a public page. Users with the Contributor role can inject arbitrary JavaScript that executes in the browser of anyone viewing the calendar.

Risk Assessment

An attacker can execute arbitrary scripts in visitors' browsers, leading to session theft, redirects, or data theft.

Recommendation

Update the Calendar plugin to version 1.3.18 or later.

Other vulnerabilities in Calendar WordPress plugin

CVE-2025-14548Medium
The Calendar plugin for WordPress in versions up to and including 1.3.16 is vulnerable to Stored Cross-Site Scripting via the 'event_desc' parameter due to insufficient input sanitization and output escaping. This allows authenticated attackers with Contributor-level access or higher to inject arbitrary web scripts into pages, provided they can convince an administrator to enable lower privilege users to manage calendar events.

Original NVD description (English source)

The Calendar WordPress plugin before 1.3.18 does not properly escape a user-supplied event field before outputting it inside an HTML attribute on a public-facing page, allowing users with the Contributor role to inject arbitrary JavaScript that executes in the browser of anyone viewing the calendar.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS