CVE-2026-6910
Received Received - Intake

Stored XSS in Bookero.pl WordPress Plugin

Publication date: 2026-07-09

Last updated on: 2026-07-09

Assigner: Wordfence

Description
The Bookero.pl – system rezerwacji online plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `bookero_products` shortcode's `hide_products` (and `filter_products`) attributes in versions up to and including 2.2. This is due to insufficient input sanitization and output escaping in the `bookero_products()` function — the raw attribute value is concatenated directly into an inline `<script>` block without any escaping. This makes it possible for authenticated attackers with contributor-level access and above to inject arbitrary web scripts into pages that will execute whenever a user accesses the injected page.

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Meta Information

Published
2026-07-09
Last Modified
2026-07-09
Generated
2026-07-09
AI Q&A
2026-07-09
EPSS Evaluated
N/A
NVD
CVE-2026-6910
EUVD
EUVD-2026-42528

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
bookero bookero.pl to 2.2 (inc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

The vulnerability exists in the Bookero.pl online booking system plugin for WordPress, specifically in versions up to and including 2.2. It is a Stored Cross-Site Scripting (XSS) issue caused by insufficient input sanitization and output escaping in the bookero_products shortcode's hide_products and filter_products attributes. The raw attribute values are directly inserted into an inline <script> block without escaping, allowing authenticated users with contributor-level access or higher to inject arbitrary scripts that execute whenever a user views the affected page.

Impact Analysis

This vulnerability can allow attackers with contributor-level access or higher to inject malicious scripts into web pages. These scripts execute in the context of users who visit the infected pages, potentially leading to theft of user credentials, session hijacking, defacement, or distribution of malware. The impact includes loss of data integrity and confidentiality, as well as damage to the website's reputation.

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