CVE-2026-9576: Unknown Fluent Booking

Medium severity, CVSS 4.9. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Unknown Fluent Booking: before 2.1.2 (fixed in 2.1.2)

Published 2026-06-30. Last modified 2026-06-30.