WowStore Filter block permits contributor-level stored cross-site scripting
WowStore through 4.4.24 permits stored cross-site scripting through the currentPostId attribute of the product-blocks/filter block. An authenticated Contributor can save attacker-controlled currentPostId block data; WOPB\blocks\Filter::content() uses the value and then interpolates it without output escaping into the rendered data-postid attribute. The stored script executes when a user views the affected page, which can expose that user's session or allow actions in their browser. Version 4.5.0 converts currentPostId to an integer with absint() and escapes the rendered data-postid value with esc_attr().
- Component
- WowStore – Store Builder & Product Blocks for WooCommerce
- Plugin slug
product-blocks- Affected
- <= 4.4.24
- Safe version
4.5.0- Published
- Jul 29, 2026
This CVE was published Jul 29, 2026 and is one of 6 known issues for this plugin.
Update, patch or deactivate.
Update WowStore to 4.5.0 or later. Review content authored or edited by Contributor-level accounts for unexpected product-blocks/filter attributes and remove injected markup.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The WowStore – Store Builder & Product Blocks for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'currentPostId' Block Attribute in all versions up to, and including, 4.4.24 due to insufficient input sanitization and output escaping. 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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N