CVE Catalog

CVE-2026-6910

MediumCVSS 6.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.21%

12th percentile - higher than 12% of all known CVEs

Summary

The Bookero.pl – system rezerwacji online plugin for WordPress up to version 2.2 contains a Stored Cross-Site Scripting vulnerability via the `hide_products` and `filter_products` attributes of the `bookero_products` shortcode. Insufficient input sanitization and output escaping in the `bookero_products()` function cause the raw attribute value to be concatenated directly into an inline `<script>` block without any escaping.

Risk Assessment

Authenticated attackers with contributor-level access or higher can inject arbitrary web scripts into pages, which execute whenever a user accesses the injected page, potentially leading to session theft, redirects, or other malicious actions.

Recommendation

Immediately update the Bookero.pl plugin to the latest available version that fixes this vulnerability. If no update is available, temporarily disable the `bookero_products` shortcode or restrict its use to trusted users only.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS