CVE-2026-1856

MEDIUM EPSS 9.2%
Published Jun 19, 20261w ago · Modified Jun 22, 20261w ago
6.4 CVSS 3.1
Medium
Find Similar
Published Jun 19, 2026 1w ago
Last Modified Jun 22, 2026 1w ago

Description

The Appointment Booking Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via custom booking field labels in all versions up to, and including, 1.4.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CVSS Details

Base Score
6.4
Exploitability
3.1
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
9.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

References 4

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/creavi-booking-service/tags/1.1.0/assets/js/booking.js#L379
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/creavi-booking-service/trunk/assets/js/booking.js#L379
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3564451/creavi-booking-service
  • wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/2618ccde-2bb0-4cd4-b415-68a671507709?source=cve

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.