Review reviewHigh

CVE-2026-13440

wedevs StoreGrowth – Upsell, BOGO, Quick View, Direct Checkout & Side Cart for WooCommerce

The StoreGrowth: Smart Sales Booster for WooCommerce | BOGO, Upsells, Direct Checkout, Quick View, Side Cart plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'message_popup' parameter in all versions up to, and including, 2.1.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The exploit is possible because the 'ajd_protected' nonce required by the create_popup handler is exposed to all unauthenticated...

CVSS: 7.2
EPSS: 0.27%
CISA KEV: Not listed
Published: 2026.07.28

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.27%

Technical severityCVSS 7.2

Vulnerability overview

Affected product and versions

Product: wedevs StoreGrowth – Upsell, BOGO, Quick View, Direct Checkout & Side Cart for WooCommerce
Affected versions: <= 2.1.0
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that wedevs StoreGrowth – Upsell, BOGO, Quick View, Direct Checkout & Side Cart for WooCommerce and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CWE: CWE-79