Booking calendar, Appointment Booking System <= 3.2.17 — Unauthenticated Time-Based SQL Injection via 'wpdevart_id'
CVE-2026-15289Published · Updated Action summary
Affected: ≤3.2.17Update to 3.2.18 or newer
All remediation steps- Severity
- Medium5.9
- CVSS
- 5.9CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:HAttack complexity- High
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:NIntegrity- None
A:NAvailability- None
- Weakness
- CWE-89 SQL Injection
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Booking calendar, Appointment Booking System booking-calendar
- Affected≤ 3.2.17
- Patched in3.2.18
Update to 3.2.18 or newer.
You are affected if you run ≤ 3.2.17. Version 3.2.18 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Booking calendar, Appointment Booking System.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 3.2.18, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Booking calendar, Appointment Booking System to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to shaman0x01.
The Booking calendar, Appointment Booking System plugin for WordPress is vulnerable to time-based SQL Injection via the ‘wpdevart_id’ parameter in all versions up to, and including, 3.2.17 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. In order to exploit the vulnerability, the Pro version of the plugin must be installed and activated, with the 'Delete previous dates' option checked.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
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All 23| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Unauthenticated Insecure Direct Object Reference ≤3.2.36No patch available | CVE-2026-73395 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤3.2.36No patch available | CVE-2026-14334 | |
| Medium5.3 | Missing Authorization to Unauthenticated Arbitrary Modification via wpdevart_payment AJAX Action ≤3.2.36No patch available | CVE-2026-8840 | |
| Medium5.3 | Missing Authorization ≤3.2.36No patch available | CVE-2026-57778 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤3.2.36No patch available | CVE-2026-25435 |
- Medium5.3Unauthenticated Insecure Direct Object Reference
≤3.2.36No patch available
- High7.2Unauthenticated Stored Cross-Site Scripting
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- Medium5.3Missing Authorization to Unauthenticated Arbitrary Modification via wpdevart_payment AJAX Action
≤3.2.36No patch available
- Medium5.3Missing Authorization
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- High7.2Unauthenticated Stored Cross-Site Scripting
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Same weakness (SQL Injection)
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Timeline
CVE published
Severity medium, CVSS 5.9
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.