# WowStore <= 4.5.8 - Authenticated (Contributor+) Sensitive Information Exposure via User Search REST Endpoint

- **ID:** WPSEC-2026-1494
- **Plugin:** WowStore – Store Builder & Product Blocks for WooCommerce (`product-blocks`), https://wordpress.org/plugins/product-blocks/
- **Affected versions:** all versions before 4.6.0
- **Fixed in:** 4.6.0 (Update to 4.6.0 or later.)
- **Severity:** Medium 4.3 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
- **Weakness:** CWE-200
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-24)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/product-blocks
- **Fix released:** 2026-10-22
- **Published:** 2026-10-23
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1494/

## Description

The product-blocks plugin for WordPress is vulnerable to Sensitive Information Exposure via the 'author' search of the /wopb/v1/search REST endpoint in all versions up to, and including, 4.5.8. This is due to the endpoint matching the search term against every user's e-mail address and login name for any user with the edit_posts capability. This makes it possible for authenticated attackers, with Contributor-level access and above, to work out the e-mail addresses and login names of site users, including administrators.

## References

- https://wpsec.com/vuln/WPSEC-2026-1494/
- https://plugins.svn.wordpress.org/product-blocks/tags/4.6.0/
- https://wordpress.org/plugins/product-blocks/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1494/

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.