CVE-2026-3658

HIGH EPSS 22.8%
Published Mar 19, 20263mo ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
High
Find Similar
Published Mar 19, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

Description

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to SQL Injection via the 'fields' parameter in all versions up to, and including, 1.6.10.0 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database, including usernames, email addresses, and password hashes.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None

Threat Intelligence

EPSS Exploit Probability
22.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-89 SQL Injection Injection

References 5

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/trunk/includes/class-appointment-type-model.php#L907
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/trunk/includes/lib/td-util/class-td-api-model.php#L140
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/trunk/includes/lib/td-util/class-td-db-model.php#L1171
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3485143/
  • wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/67c7b9b2-e73f-47fe-aecc-14e998a607c8?source=cve

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.