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CVE-2026-116557

CRITICAL
9.1NVD

Summary

generated automatically from NVD data

The WP Booking System - Booking Calendar plugin for WordPress has a missing authorization flaw (CWE-862) in the wpbs_action_ajax_calendar_remove_note() function, which performs no capability check. Through version 2.1.0.5, any authenticated user with Subscriber-level access or higher can delete arbitrary calendar notes belonging to any calendar, causing unauthorized data modification. The CVSS v3.1 score is 9.1 (CRITICAL).

NVD description

The WP Booking System - Booking Calendar plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the wpbs_action_ajax_calendar_remove_note() function in versions up to, and including, 2.1.0.5 This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete arbitrary calendar notes belonging to any calendar.

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EPSS · FIRST.org

0.35%probability of exploitation in the next 30 days

Higher than 28% of scored CVEs

EPSS (Exploit Prediction Scoring System) estimates, from observed exploitation activity, how likely a CVE is to be exploited in the next 30 days. It complements CVSS, which measures severity, not likelihood. Score of 2026-10-31, recomputed daily by FIRST.org.

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