Answer in brief
CVE-2026-108123 records a High severity (CVSS 7.5) vulnerability in WP Booking System <= 2.1.0.3 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via 'wpbs_action=email_logs' Action. The current sources do not mark it as known exploited. The current feed maps murgroland/WP Booking System – Booking Calendar (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps murgroland/WP Booking System – Booking Calendar (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| murgroland/WP Booking System – Booking Calendargeneric | >=0 <=2.1.0.3 | Not reported |
Published upstream
Oct 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.