PT-2026-23812 · WordPress · Hammas Calendar

Djaidja Moundjid · Published 2026-03-07 · Updated 2026-03-07 · CVE-2026-1902

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Hammas Calendar plugin for WordPress versions through 1.5.11

Description The Hammas Calendar plugin for WordPress is susceptible to Stored Cross-Site Scripting through the apix parameter in the 'hp-calendar-manage-redirect' shortcode. Insufficient input sanitization and output escaping allow authenticated attackers with Contributor-level access or higher to inject arbitrary web scripts into pages. These scripts will execute when a user accesses the injected page.

Recommendations Update the Hammas Calendar plugin to a version newer than 1.5.11.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-1902

Affected Products

Hammas Calendar

References · 10

• https://nvd.nist.gov/vuln/detail/CVE-2026-1902 · Security Note
• https://twitter.com/VulmonFeeds/status/2030147805382111443 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/03956922-988a-4cb6-bf20-51878a5b1555?source=cve · Note
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3474583%40hammas-calendar&new=3474583%40hammas-calendar&sfp_email=&sfph_mail= · Note
• https://twitter.com/CVEnew/status/2030339371023687906 · Twitter Post
• https://t.me/CVEtracker/46676 · Telegram Post
• https://plugins.trac.wordpress.org/browser/hammas-calendar/tags/1.5.11/hp-calendar.php#L37 · Note
• https://plugins.trac.wordpress.org/browser/hammas-calendar/tags/1.5.11/src/HpPlugin.php#L54 · Note
• https://twitter.com/infoflowcloud/status/2030340531125944405 · Twitter Post
• https://t.me/cveNotify/154561 · Telegram Post