Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/hammas-calendar/tags/1.5.11/hp-calend
- https://plugins.trac.wordpress.org/browser/hammas-calendar/tags/1.5.11/src/HpPlu
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old
- https://www.wordfence.com/threat-intel/vulnerabilities/id/03956922-988a-4cb6-bf2
FAQ
What is CVE-2026-1902?
CVE-2026-1902 is a vulnerability with a CVSS score of 6.4 (MEDIUM). 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....
How severe is CVE-2026-1902?
CVE-2026-1902 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-1902?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.