CVE-2026-15335

Booking Package <= 1.7.20 - Unauthenticated SQL Injection via 'email' Form Parameter

The Booking Package plugin for WordPress is vulnerable to generic SQL Injection via 'email' Form Parameter (form<N>) in all versions up to, and including, 1.7.20 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. The vulnerable REST API endpoint /wp-json/booking-package/v1/request is registered with permission_callback: __return_true and wp_magic_quotes does not apply to REST-sourced $_POST values, meaning single quotes in the payload reach the SQL sink intact without any authentication requirement. The impact of this is severely limited as the vulnerable parameter goes through is_email.

We have discovered 411 live websites that are affected by CVE-2026-15335.

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Affected Software

Product  Booking Package
Category Wordpress Plugins
Vulnerable Domains411 live websites (100% of Booking Package install base)
Vulnerable Versions
  • from 0 through 1.7.20
Vulnerable Versions Count47 versions ( 100% of all versions)


Common Weakness Enumeration

CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')



Details

  • Published - Jul 11, 2026
  • Updated - Jul 14, 2026

Credits

  • PRISM (finder)

Website Distribution by Country

Number of websites using CVE-2026-15335
United States5 websites


Japan361 websites
Germany5 websites
Denmark5 websites
Spain4 websites
Italy3 websites
Brazil2 websites
GB2 websites
Netherlands2 websites

Website Distribution by TLD

Number of websites using CVE-2026-15335
.com216 websites
.jp85 websites
.co.jp31 websites
.net26 websites
.org5 websites
.info5 websites
.dk4 websites
.com.br2 websites
.ru2 websites
.nl2 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-15335

Top websites that are affected by CVE-2026-15335. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
***************.***********.net Japan***,***
**************.com Japan***,***
******.org Japan***,***
**.dk Denmark*,***,***
***********.com Japan*,***,***
********************.com Japan*,***,***
********.jp Japan*,***,***
*****.jp Japan*,***,***
**********.**.jp Japan*,***,***
**********.org Japan*,***,***
See full domain list

FAQ

CVE-2026-15335 is Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in Booking Package
A total of 411 websites have been identified as vulnerable to CVE-2026-15335, based on global website indexing conducted by WebTechSurvey.
The Booking Package is affected by the CVE-2026-15335 vulnerability.
Booking Package versions up to and including 1.7.20 are vulnerable to CVE-2026-15335.

References