Is CVE-2026-6910 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-6910?

CVE-2026-6910 has a CVSS v3 severity of MEDIUM (6.4).

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CVE-2026-6910

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.