YITH WooCommerce Compare <= 3.15.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'text' Shortcode Attribute
- ID
- WPSEC-2026-0954
- Plugin
- YITH WooCommerce Compare (yith-woocommerce-compare)
- Affected
- all versions before 3.15.1
- Remediation
- Update to 3.15.1 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-14
- Attack surface
- YITH WooCommerce Compare on WPSec AttackSurface
- Fix released
- Published
Description
The YITH WooCommerce Compare plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'text' attribute of the [yith_woocompare_counter] shortcode in all versions up to, and including, 3.15.0. This is due to insufficient input sanitization and output escaping. The attribute is only passed through sanitize_text_field(), which leaves HTML-entity-encoded markup in place. The value is then printed into the counter's data-text_o attribute with esc_attr(), which does not encode existing entities a second time. On page load, the front-end counter script writes the decoded value into the page with jQuery's .html(). 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-2026-0954/
- https://plugins.svn.wordpress.org/yith-woocommerce-compare/tags/3.15.1/
- https://wordpress.org/plugins/yith-woocommerce-compare/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
This advisory as JSON or Markdown · All advisories: JSON, RSS