TrueBooker – Appointment Booking and Scheduler System <= 1.2.9 — Missing Authorization to Unauthenticated Settings Update
CVE-2026-39798Published · Updated Action summary
Affected: ≤1.2.9Update to 1.3.0 or newer
All remediation steps- Severity
- Medium5.3
- CVSS
- 5.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Required access
- No account needed
- Exploit prediction (EPSS)
- 0.2% chance in 30 days15th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
TrueBooker – Appointment Booking and Scheduler System truebooker-appointment-booking
- Affected≤ 1.2.9
- Patched in1.3.0
Update to 1.3.0 or newer.
You are affected if you run ≤ 1.2.9. Version 1.3.0 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under TrueBooker – Appointment Booking and Scheduler 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 1.3.0, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch TrueBooker – Appointment Booking and Scheduler System to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Abdullah Kareem "cyberkareem".
The TrueBooker – Appointment Booking and Scheduler System plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in all versions up to, and including, 1.2.9. This makes it possible for unauthenticated attackers to update plugin settings.
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 TrueBooker – Appointment Booking and Scheduler System
All 25| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | 1.2.9 - Unauthenticated Information Exposure 1.1.9 – 1.2.9Update to 1.3.0 | CVE-2026-94229 | |
| Medium5.3 | 1.2.9 - Missing Authorization 1.1.9 – 1.2.9Update to 1.3.0 | CVE-2026-94230 | |
| Medium5.3 | 1.2.9 - Missing Authorization 1.1.9 – 1.2.9Update to 1.3.0 | CVE-2026-94231 | |
| Medium5.3 | 1.2.9 - Missing Authorization 1.1.9 – 1.2.9Update to 1.3.0 | CVE-2026-94228 | |
| Critical9.8 | Missing Authorization to Unauthenticated Arbitrary User Email Modification via 'admin_addcustomer' AJAX Action ≤1.2.3Update to 1.2.4 | CVE-2026-14349 |
- Medium5.31.2.9 - Unauthenticated Information Exposure
1.1.9 – 1.2.9Update to 1.3.0
- Medium5.31.2.9 - Missing Authorization
1.1.9 – 1.2.9Update to 1.3.0
- Medium5.31.2.9 - Missing Authorization
1.1.9 – 1.2.9Update to 1.3.0
- Medium5.31.2.9 - Missing Authorization
1.1.9 – 1.2.9Update to 1.3.0
- Critical9.8Missing Authorization to Unauthenticated Arbitrary User Email Modification via 'admin_addcustomer' AJAX Action
≤1.2.3Update to 1.2.4
Timeline
CVE published
Severity medium, CVSS 5.3
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.