What is CVE-2026-5513?

CVE-2026-5513 is a high-severity vulnerability in Ladela Online Scheduling And Appointment Booking System – Bookly, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-06-13.

How severe is CVE-2026-5513?

High severity. CVSS v3 base score is 7.2 out of 10.

Is CVE-2026-5513 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Ladela Online Scheduling And Appointment Booking System – Bookly

CVE-2026-5513

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).

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (36.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

Ladela Online Scheduling And Appointment Booking System – Bookly — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2026-5513?: CVE-2026-5513 is a high-severity vulnerability in Ladela Online Scheduling And Appointment Booking System – Bookly, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-06-13.
How severe is CVE-2026-5513?: High severity. CVSS v3 base score is 7.2 out of 10.
Is CVE-2026-5513 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.