# annasta Woocommerce Product Filters <= 1.8.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Caller ID Attribute

- **ID:** WPSEC-2026-0741
- **Plugin:** annasta Filters for WooCommerce (`annasta-woocommerce-product-filters`), https://wordpress.org/plugins/annasta-woocommerce-product-filters/
- **Affected versions:** all versions before 1.8.5
- **Fixed in:** 1.8.5 (Update to 1.8.5 or later.)
- **Severity:** Medium 6.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)
- **Weakness:** CWE-79
- **Usage among sites WPSec scans:** plugin Low, affected versions None seen (as of 2026-10-10)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/annasta-woocommerce-product-filters
- **Fix released:** 2026-10-09
- **Published:** 2026-10-10
- **URL:** https://wpsec.com/vuln/WPSEC-2026-0741/

## Description

The annasta Filters for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the caller id attribute of the plugin's filters shortcode and block in all versions up to, and including, 1.8.4 due to insufficient input sanitization and output escaping. The caller id is concatenated unescaped into the HTML id and for attributes of the preset wrapper, filter inputs and labels. 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.

## References

- https://wpsec.com/vuln/WPSEC-2026-0741/
- https://plugins.svn.wordpress.org/annasta-woocommerce-product-filters/tags/1.8.5/
- https://wordpress.org/plugins/annasta-woocommerce-product-filters/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0741/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.