Appointment Booking Calendar <= 1.3.34 — CSV Injection
CVE-2020-9372Published · Updated Action summary
Affected: <1.3.35Update to 1.3.35 or newer
All remediation steps- Severity
- High7.8
- CVSS
- 7.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:LAttack vector- Local
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:RUser interaction- Required
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Appointment Booking Calendar appointment-booking-calendar
- Affected< 1.3.35
- Patched in1.3.35
Update to 1.3.35 or newer.
You are affected if you run < 1.3.35. Version 1.3.35 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Appointment Booking Calendar.
- 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 1.3.35, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Appointment Booking Calendar to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Daniel Monzón.
The Appointment Booking Calendar plugin before 1.3.35 for WordPress allows user input (in fields such as Description or Name) in any booking form to be any formula, which then could be exported via the Bookings list tab in /wp-admin/admin.php?page=cpabc_appointments.php. The attacker could achieve remote code execution via CSV injection.
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 Appointment Booking Calendar
All 17| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.4 | Authenticated (Subscriber+) Stored Cross-Site Scripting via 'vs_text_submitbtn' Parameter ≤1.4.05Update to 1.4.06 | CVE-2026-111727 | |
| Medium4.3 | Missing Authorization to Authenticated (Contributor+) Sensitive Information Disclosure ≤1.4.02Update to 1.4.03 | CVE-2026-12113 | |
| Medium4.3 | Authenticated (Contributor+) Sensitive Information Exposure via 'id' Parameter ≤1.4.01Update to 1.4.02 | CVE-2026-12111 | |
| Medium5.3 | Missing Authorization to Arbitrary Booking Confirmation via 'cpabc_ipncheck' Parameter ≤1.3.96Update to 1.3.97 | CVE-2025-13317 | |
| Medium4.3 | Missing Authorization ≤1.3.95Update to 1.3.96 | CVE-2025-64261 |
- Medium6.4Authenticated (Subscriber+) Stored Cross-Site Scripting via 'vs_text_submitbtn' Parameter
≤1.4.05Update to 1.4.06
- Medium4.3Missing Authorization to Authenticated (Contributor+) Sensitive Information Disclosure
≤1.4.02Update to 1.4.03
- Medium4.3Authenticated (Contributor+) Sensitive Information Exposure via 'id' Parameter
≤1.4.01Update to 1.4.02
- Medium5.3Missing Authorization to Arbitrary Booking Confirmation via 'cpabc_ipncheck' Parameter
≤1.3.96Update to 1.3.97
- Medium4.3Missing Authorization
≤1.3.95Update to 1.3.96
Timeline
CVE published
Severity high, CVSS 7.8
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.