Read the docs
TI-2026-62041 Aliases CVE-2026-91847GHSA-mj5r-8jcf-67xr

Bookly < 28.2 - Unauthenticated AI Assistant Conversation Disclosure and Message Injection via IDOR

Priority LOW 21CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-639.

Summary

The Online Scheduling and Appointment Booking System WordPress plugin before 28.2 does not verify that the requester owns the AI booking-assistant conversation named in its unauthenticated conversation actions, allowing any unauthenticated visitor to read another visitor's assistant messages and to inject messages into their in-progress conversation.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00217 12th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Online Scheduling and Appointment Booking System (Unknown): 28.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownOnline Scheduling and Appointment Booking System28.1 to before 28.228.2Patch availableCNA
  • Online Scheduling and Appointment Booking System VendorUnknown Affected 28.1 to before 28.2 Fixed in 28.2 Patch available CNA

Remediation

  • Fix · CNA Online Scheduling and Appointment Booking System (Unknown) Fixed in 28.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-91847
  2. 2026-10-03 Alias added: GHSA-mj5r-8jcf-67xr

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences