CVE-2026-89063 Details.
Bookly <=28.1 - IDOR Unauthenticated Sensitive Data Access
Atlas does not check this one. Needs requests that change data.
To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check.
About CVE-2026-89063. What It Means.
Bookly WordPress plugin <= 28.1 contains an insecure direct object reference caused by missing validation on 'conversation_id' parameter, letting unauthenticated attackers read and inject messages into any AI booking conversation, exploit requires no authentication.
Affected Product. What Is Hit.
- Vendor
- bookly
- Product
- Bookly Responsive Appointment Booking Tool
References. Where To Read More.
- https://www.wordfence.com/threat-intel/vulnerabilities/wordpress-plugins/bookly-responsive-appointment-booking-tool/online-scheduling-and-appointment-booking-system-281-insecure-direct-object-reference-to-unauthenticated-sensitive-data-access-and-message-injection-via-conversation-id-parameter
- https://www.cve.org/CVERecord?id=CVE-2026-89063
FAQ
Common Questions.
Bookly <=28.1 - IDOR Unauthenticated Sensitive Data Access. Bookly WordPress plugin <= 28.1 contains an insecure direct object reference caused by missing validation on 'conversation_id' parameter, letting unauthenticated attackers read and inject messages into any AI booking conversation, exploit requires no authentication.
No. To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check. The facts about CVE-2026-89063 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-89063 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Bookly Responsive Appointment Booking Tool to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-89063. Atlas does not run a check for it, so nothing here says whether a particular site is affected.