CVE-2026-6910

Summary

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.

Affected Software

Weaknesses

• CWE-79: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

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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