CVE-2026-6910
Bookero.pl <= 2.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
- State
- Published
- Severity
- 6.4 Medium
- Published
- Jul 9, 2026
- Updated
- Jul 9, 2026
- Reserved
- Apr 23, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N | Wordfence |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
Bookero.pl – system rezerwacji onlinesafistudio |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/fd0e6ca6-f6a7-4e81-aea1-3b59de0173d6?source=cve
- https://plugins.trac.wordpress.org/browser/bookeropl/trunk/libraries/bookero-front.php#L174
- https://plugins.trac.wordpress.org/browser/bookeropl/tags/2.1/libraries/bookero-front.php#L174
- https://plugins.trac.wordpress.org/browser/bookeropl/trunk/libraries/bookero-front.php#L173
- https://plugins.trac.wordpress.org/browser/bookeropl/tags/2.1/libraries/bookero-front.php#L173
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3524452%40bookeropl&new=3524452%40bookeropl
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