How severe is CVE-2026-2231?

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

XSS in Techjewel Fluent Booking – The Ultimate Appointments Scheduling, Events Booking, Calendar Solution

CVE-2026-2231

The Fluent Booking plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple parameters in all versions up to, and including, 2.0.01 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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (22.5th 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

Techjewel Fluent Booking – The Ultimate Appointments Scheduling, Events Booking, Calendar Solution — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-2231?: CVE-2026-2231 is a high-severity vulnerability in Techjewel Fluent Booking – The Ultimate Appointments Scheduling, Events Booking, Calendar Solution, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-03-26.
How severe is CVE-2026-2231?: High severity. CVSS v3 base score is 7.2 out of 10.