WP Booking System <= 2.1.0.1 — Authenticated (Administrator+) SQL Injection via 'orderby' Parameter
CVE-2026-111178Published · Updated Action summary
Affected: ≤2.1.0.1Update to 2.1.0.2 or newer
All remediation steps- Severity
- Medium4.9
- CVSS
- 4.9CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:HPrivileges required- High
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:NIntegrity- None
A:NAvailability- None
- Weakness
- CWE-89 SQL Injection
- Required access
- Unknown
- Exploit prediction (EPSS)
- 0.3% chance in 30 days22th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
WP Booking System – Booking Calendar wp-booking-system
- Affected≤ 2.1.0.1
- Patched in2.1.0.2
Update to 2.1.0.2 or newer.
You are affected if you run ≤ 2.1.0.1. Version 2.1.0.2 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under WP Booking System – Booking Calendar.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 2.1.0.2, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch WP Booking System – Booking Calendar to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Wordfence PRISM.
The WP Booking System – Booking Calendar plugin for WordPress is vulnerable to generic SQL Injection via the 'data[orderby]' parameter in all versions up to, and including, 2.1.0.1 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with administrator-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. Exploitation requires the targeted calendar to have more than 200 bookings, as the orderby value is only forwarded to the database layer when the AJAX handler takes the use_ajax branch; an Administrator can satisfy this condition by creating bookings directly.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in WP Booking System – Booking Calendar
All 17| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤2.1.0.6Update to 2.1.0.7 | CVE-2026-57639 | |
| Critical9.1 | Missing Authorization to Unauthenticated Arbitrary Calendar Note Deletion via wpbs_calendar_remove_note AJAX Action ≤2.1.0.5Update to 2.1.0.6 | CVE-2026-116557 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤2.1.0.2Update to 2.1.0.3 | CVE-2026-109147 | |
| Medium6.8 | Missing Authorization to Authenticated (Subscriber+) Privilege Escalation via 'user_permission' Parameter via Cross-Form Nonce Reuse ≤2.1.0.3Update to 2.1.0.4 | CVE-2026-109369 | |
| Medium6.5 | Missing Authorization to Authenticated (Subscriber+) Sensitive Information Exposure via wpbs_refresh_calendar_editor AJAX action ≤2.1.0.3Update to 2.1.0.4 | CVE-2026-109368 |
- High7.2Unauthenticated Stored Cross-Site Scripting
≤2.1.0.6Update to 2.1.0.7
- Critical9.1Missing Authorization to Unauthenticated Arbitrary Calendar Note Deletion via wpbs_calendar_remove_note AJAX Action
≤2.1.0.5Update to 2.1.0.6
- Medium6.1Reflected Cross-Site Scripting
≤2.1.0.2Update to 2.1.0.3
- Medium6.8Missing Authorization to Authenticated (Subscriber+) Privilege Escalation via 'user_permission' Parameter via Cross-Form Nonce Reuse
≤2.1.0.3Update to 2.1.0.4
- Medium6.5Missing Authorization to Authenticated (Subscriber+) Sensitive Information Exposure via wpbs_refresh_calendar_editor AJAX action
≤2.1.0.3Update to 2.1.0.4
Same weakness (SQL Injection)
All SQL Injection| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity medium, CVSS 4.9
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.
- EPSS
- Exploit Prediction Scoring System by FIRST.org.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.