High severity · published Mar 26, 2026
CVE-2026-2231
Fluent Booking <= 2.0.01 - Unauthenticated Stored Cross-Site Scripting via Multiple Parameters
7.2
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FB
Fluent Booking – The Ultimate Appointments Scheduling, Events Booking, Events Calendar Solution · techjewel
through 2.0.01 · source: vendor
Affected product
FB
Fluent Booking – The Ultimate Appointments Scheduling, Events Booking, Events Calendar Solution
techjewel
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2231
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2231
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/fluent-booking/trunk/app/Hooks/Handlers/FrontEndHandler.php#L864
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/fluent-booking/trunk/app/Models/Booking.php#L440
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/fluent-booking/trunk/app/Models/Booking.php#L448
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/fluent-booking/trunk/app/Services/LocationService.php#L110
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/fluent-booking/trunk/app/Services/LocationService.php#L115
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3463540/
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