PT-2026-49091 · WordPress · Bookly

Naoya Takahashi · CVE-2026-5513 · Published 2026-06-13 · Updated 2026-06-16

Positive Technologies (AI Summary)

CVSS v3.1

7.2

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Bookly versions prior to 27.3

Description The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress contains a Stored Cross-Site Scripting issue. This occurs due to insufficient input sanitization and output escaping related to the bookly-customer-full-name cookie. Unauthenticated attackers can inject arbitrary web scripts into pages, which execute when a user accesses the affected page. This issue is only exploitable if the 'Remember personal information in cookies' setting is enabled.

Recommendations Update to a version later than 27.2. Disable the 'Remember personal information in cookies' setting to mitigate the risk of exploitation.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-5513

Affected Products

Bookly

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-5513 · Security Note
• https://t.me/cveNotify/167508 · Telegram Post
• https://t.me/cveNotify/167359 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2065778208830521647 · Twitter Post
• https://plugins.trac.wordpress.org/changeset/3504922/bookly-responsive-appointment-booking-tool · Note
• https://t.me/CVEtracker/56797 · Telegram Post
• https://wordfence.com/threat-intel/vulnerabilities/id/b8ab6dfa-3764-470f-aa49-1964f42d93de?source=cve · Note
• https://twitter.com/vuldb/status/2065971633287041379 · Twitter Post
• https://twitter.com/CVEnew/status/2065840861896687786 · Twitter Post