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Description

The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'bookly-customer-full-name' cookie in versions up to, and including, 27.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires 'Remember personal information in cookies' setting to be enabled (disabled by default).

PUBLISHED Reserved 2026-04-03 | Published 2026-06-13 | Updated 2026-06-13 | Assigner Wordfence




HIGH: 7.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
unaffected

Any version
affected

Timeline

2026-04-03:Vendor Notified
2026-06-12:Disclosed

Credits

Naoya Takahashi finder

References

www.wordfence.com/...-3764-470f-aa49-1964f42d93de?source=cve

plugins.trac.wordpress.org/...nsive-appointment-booking-tool

cve.org (CVE-2026-5513)

nvd.nist.gov (CVE-2026-5513)

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