CVE-2026-91847

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.

Affected Software

VendorProductVersion RangeStatus
UnknownOnline Scheduling and Appointment Booking System28.1 < 28.2affected

Weaknesses

  • CWE-639 Authorization Bypass Through User-Controlled Key

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References