Stored Cross-Site Scripting in My Calendar Plugin for WordPress
CVE-2026-2355

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
My Calendar – Accessible Event Manager
Vendor
CVE Published:
4 March 2026

What is CVE-2026-2355?

The My Calendar – Accessible Event Manager plugin for WordPress has a vulnerability that allows authenticated users with Contributor-level access and above to exploit the template attribute of the [my_calendar_upcoming] shortcode. This vulnerability arises from improper handling of user-supplied values in the mc_draw_template() function, which fails to fully sanitize input during rendering. As a result, attackers can inject arbitrary web scripts into pages, which will execute whenever a user accesses those pages, compromising the security of affected sites.

Affected Version(s)

My Calendar – Accessible Event Manager 0 <= 3.7.3

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/my-calendar/ta...
https://plugins.trac.wordpress.org/browser/my-calendar/ta...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Muhammad Yudha - DJ
.