Vulnerabilities / ShopBoost / WPSEC-2026-3148
ShopBoost <= 1.8.9 - Unauthenticated IP Spoofing to Rate Limit Bypass via Quick Order Submission
Medium 5.3
CWE-348Fixed in 1.9.0
- ID
- WPSEC-2026-3148
- Plugin
- ShopBoost – WooCommerce Toolkit (flexible-minimum-order)
- Affected
- from 1.7.3 before 1.9.0
- Remediation
- Update to 1.9.0 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weakness
- CWE-348
- Usage
- Plugin Low · Affected versions None seen among sites WPSec scans, 2026-11-14
- Attack surface
- ShopBoost on WPSec AttackSurface
- Fix released
- Published
Description
The ShopBoost plugin for WordPress is vulnerable to IP address spoofing via the Quick Order submission endpoint (flexmior_quick_order_submit) in all versions up to, and including, 1.8.9. This is due to the per-IP submission rate limit being keyed on the client-supplied CF-Connecting-IP and X-Forwarded-For headers, which are trusted ahead of REMOTE_ADDR. This makes it possible for unauthenticated attackers to send a different spoofed header with each request, get a fresh rate-limit bucket every time and flood the store with quick-order submissions and the notification emails they trigger.
References
- https://wpsec.com/vuln/WPSEC-2026-3148/
- https://plugins.svn.wordpress.org/flexible-minimum-order/tags/1.9.0/
- https://wordpress.org/plugins/flexible-minimum-order/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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