CVE-2026-14827

Calendar < 1.3.18 - Contributor+ Stored XSS via event_link Parameter

Published Jul 27, 2026 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Weaknesses CWE-79
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Calendar
Calendar calendar
Wordpress
Wordpress wordpress
Vendors & Products Calendar
Calendar calendar
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Description 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.
Title Calendar < 1.3.18 - Contributor+ Stored XSS via event_link Parameter
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Jul 27, 2026, 5:39 PM
Reserved
Jul 6, 2026, 8:51 AM
Status
Deferred
Published
Jul 27, 2026, 7:16 AM
Modified
Jul 27, 2026, 8:33 PM