What is CVE-2026-92561?

CVE-2026-92561 is a medium-severity vulnerability in Wpdevelop Booking Calendar, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-09-18.

How severe is CVE-2026-92561?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Wpdevelop Booking Calendar

CVE-2026-92561

The Booking Calendar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'options' parameter in all versions up to, and including, 11.8.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The nonce check is bypassed by default because the 'booking_is_nonce_at_front_end' option ships disabled, allowing unauthenticated requests to reach the vulnerable sink without any verification.

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Wpdevelop Booking Calendar

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-92561?: CVE-2026-92561 is a medium-severity vulnerability in Wpdevelop Booking Calendar, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-09-18.
How severe is CVE-2026-92561?: Medium severity. CVSS v3 base score is 6.1 out of 10.