CVE-2026-9576
MediumCVSS 4.9Exploitation Probability (EPSS)
Low risk4th percentile - higher than 4% of all known CVEs
Summary
The Fluent Booking WordPress plugin before version 2.1.2 does not verify ownership of the requested group_id before exporting attendee data via the export endpoint. Users with at least the Calendar Manager role can retrieve attendees' PII (name, email, phone, address, payment information) from calendar groups they do not own.
Risk Assessment
The risk involves unauthorized access to sensitive personal data of attendees, including name, email, phone, address, and payment information, potentially leading to privacy breaches and GDPR non-compliance.
Recommendation
Immediately update the Fluent Booking plugin to version 2.1.2 or later, which includes a fix that verifies group ownership before data export.
Other vulnerabilities in Fluent Booking
See all- CVE-2025-67597Medium
The Fluent Booking plugin (fluent-booking) in versions up to and including 1.9.11 contains a missing authorization vulnerability. It allows exploitation of incorrectly configured access control security levels.
- CVE-2025-13756Medium
The Fluent Booking plugin for WordPress is vulnerable to unauthorized calendar import and management due to a missing capability check on the "importCalendar" function in all versions up to, and including, 1.9.11. This makes it possible for authenticated attackers, with subscriber level access and above, to import arbitrary calendars and manage them.
Original NVD description (English source)
The Fluent Booking WordPress plugin before 2.1.2 does not verify ownership of the requested group_id before exporting attendee data via the export endpoint, allowing users with at least the Calendar Manager role to retrieve attendees' PII (name, email, phone, address, payment information) from calendar groups they do not own.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS