Booking Calendar <= 6.2 — Cross-Site Request Forgery leading to Cross-Site Scripting
6f36d866-aa94-478b-8b62-0906bc95e413Published · Updated Action summary
Affected: <6.2.1Update to 6.2.1 or newer
All remediation steps- Severity
- High8.8
- CVSS
- 8.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:RUser interaction- Required
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-79 Cross-Site Scripting
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Booking Calendar booking
- Affected< 6.2.1
- Patched in6.2.1
Update to 6.2.1 or newer.
You are affected if you run < 6.2.1. Version 6.2.1 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.
- 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 6.2.1, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Booking Calendar to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Edwin Molenaar.
The Booking Calendar plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 6.2. This is due to missing or incorrect nonce validation in the plugin's Import tab. This makes it possible for unauthenticated attackers to to inject arbitrary web scripts that execute in a victim's browser via forged request granted they can trick a site administrator into performing an action such as clicking on a link.
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 Booking Calendar
All 38| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'WPBC_FLEXTIMELINE_NAV' AJAX Action ≤11.4.3Update to 11.5 | CVE-2026-18496 | |
| Low2.7 | 11.8.2 - Authenticated (Editor+) Information Exposure 10.15 – 11.8.2Update to 11.8.3 | CVE-2026-105195 | |
| Medium5.3 | Unauthenticated Information Exposure <11.8Update to 11.8 | CVE-2026-105193 | |
| Medium5.3 | Unauthenticated Duplicate Slot Booking ≤11.8.4Update to 11.9 | CVE-2026-39601 | |
| Medium6.1 | Reflected Cross-Site Scripting via 'wpbc_auto_fill' Parameter ≤11.8.3Update to 11.8.4 | CVE-2026-93655 |
- Medium5.3Unauthenticated Sensitive Information Exposure in 'WPBC_FLEXTIMELINE_NAV' AJAX Action
≤11.4.3Update to 11.5
- Low2.711.8.2 - Authenticated (Editor+) Information Exposure
10.15 – 11.8.2Update to 11.8.3
- Medium5.3Unauthenticated Information Exposure
<11.8Update to 11.8
- Medium5.3Unauthenticated Duplicate Slot Booking
≤11.8.4Update to 11.9
- Medium6.1Reflected Cross-Site Scripting via 'wpbc_auto_fill' Parameter
≤11.8.3Update to 11.8.4
Same weakness (Cross-Site Scripting)
All Cross-Site Scripting| 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 high, CVSS 8.8
Record last updated
Sources & licenses
- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- 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.