CVE-2026-8865
No known patch is available for this vulnerability.
The affected plugin has been removed from the WordPress.org directory, and no patched version is being distributed through the official directory. If you have the affected software installed, you should uninstall or replace it rather than wait for an update.
Description
The Avalon23 Products Filter for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'avalon23_qr' shortcode in all versions up to, and including, 1.1.6. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes (notably 'title' and 'fixed_link') which are concatenated directly into single-quoted HTML attributes by the AVALON23_HELPER::draw_html_item() helper without esc_attr() or any other encoding. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1- Range: <=1.1.6
Patches
Vulnerability mechanics
References
4- plugins.trac.wordpress.org/browser/avalon23-products-filter-for-woocommerce/trunk/classes/helper.phpnvd
- plugins.trac.wordpress.org/browser/avalon23-products-filter-for-woocommerce/trunk/ext/qr_generator/index.phpnvd
- plugins.trac.wordpress.org/browser/avalon23-products-filter-for-woocommerce/trunk/ext/qr_generator/index.phpnvd
- www.wordfence.com/threat-intel/vulnerabilities/id/da9089a2-420f-4744-96d1-46c050a95328nvd
News mentions
1- Wordfence Intelligence Weekly WordPress Vulnerability Report (June 22, 2026 to June 28, 2026)Wordfence Blog · Jul 2, 2026