Reported vulnerability

WP Booking System <= 2.1.0.3 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via 'wpbs_action=email_logs' Action

Q: Which versions of WP Booking System – Booking Calendar are affected?

Wordfence lists these affected versions: Start version unspecified, through 2.1.0.3. Use the version checker above to compare your installed release with this report.

Q: Is a fix available for WP Booking System – Booking Calendar?

Wordfence reports a fix for this issue in WP Booking System – Booking Calendar. It lists these fixed versions: 2.1.0.4. Back up your website and test the recommended update before applying it to your live site.

Q: Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Published 16 Oct 2026

Updated 16 Oct 2026

CVE-2026-108123

Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.

Does this affect my version?

Check your installed version against this advisory. This compares the report’s version ranges and does not scan your website.

Wordfence advisory

high · CVSS 7.5

The WP Booking System – Booking Calendar plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.1.0.3 This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to read the stored notification email body of any booking by iterating booking_id and email_log_id, exposing customer PII including names, email addresses, phone numbers, messages, and booking dates intended to be visible only to administrators. This is exploitable by any Subscriber-level user because admin_init fires on profile.php, a wp-admin page accessible to all authenticated users.

Severity vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

WP Booking System – Booking Calendar

Software: plugin · wp-booking-system
Affected versions: Start version unspecified, through 2.1.0.3
Fix availability: Fix available
Fixed versions: 2.1.0.4

Recommended action

Update to version 2.1.0.4, or a newer patched version

Further references (1)

wordfence.com/threat-intel/vulnerabilities/id/a86fab4a-71ec-4006-96f0-46202de2f389

Data sources and licences

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CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Read licence terms

Source: Wordfence

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Questions about this vulnerability

Which versions of WP Booking System – Booking Calendar are affected?

Wordfence lists these affected versions: Start version unspecified, through 2.1.0.3. Use the version checker above to compare your installed release with this report.

Is a fix available for WP Booking System – Booking Calendar?

Wordfence reports a fix for this issue in WP Booking System – Booking Calendar. It lists these fixed versions: 2.1.0.4. Back up your website and test the recommended update before applying it to your live site.

Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Does an affected version mean my website has been hacked?

An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.

These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.

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