CVE-2026-1902

The Hammas Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'apix' parameter in the 'hp-calendar-manage-redirect' shortcode in all versions up to, and including, 1.5.11 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.

Score

CVSS 3.1 6.4 Medium

Status

Deferred - security@wordfence.com

Published

2026-03-07

Last modified

2026-04-08

Weaknesses

CWE-79

Affected products

• Hammas Calendar (Innovaatik)

References

• https://plugins.trac.wordpress.org/browser/hammas-calendar/tags/1.5.11/hp-calendar.php#L37
• https://plugins.trac.wordpress.org/browser/hammas-calendar/tags/1.5.11/src/HpPlugin.php#L54
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3474583%40hammas-calendar&new=3474583%…
• https://www.wordfence.com/threat-intel/vulnerabilities/id/03956922-988a-4cb6-bf20-51878a5b1555?source=cve