CVE-2026-6287

ShopLentor - WooCommerce Builder for Elementor & Gutenberg <= 3.3.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Product Grid 'blockUniqId' Block Attribute

2026-05-26 16:17

Strategic Overview

Status: Patched in 3.3.9
Affected Plugin: ShopLentor – All-in-One WooCommerce Growth & Store Enhancement Plugin
Affected Version: <= 3.3.8
CVSS: 5.4Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2026-6287

View all ShopLentor – All-in-One WooCommerce Growth & Store Enhancement Plugin vulnerabilities

At a glance

CVE-2026-6287 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the ShopLentor WordPress plugin, affecting versions <= 3.3.8. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 3.3.9; sites on affected versions should update now. Disclosed May 2026, reported by ammonia.

Vulnerability Overview

The ShopLentor - WooCommerce Builder for Elementor & Gutenberg plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'blockUniqId' block attribute in multiple Product Gride blocks in versions up to, and including, 3.3.8 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.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

ShopLentor <= 3.3.8 carries this weakness at blockUniqId, and reaching it takes an account at Contributor level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For ShopLentor the fix is 3.3.9: builds <= 3.3.8 are affected, anything from 3.3.9 onward is not.

Remediation

Update to version 3.3.9, or a newer patched version

How does WordSec protect against this?

An attacker needs Contributor access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: ShopLentor 3.3.9 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-6287 https://www.wordfence.com/threat-intel/vulnerabilities/id/b2d75e43-cd46-4c23-bea4-3564e0334a32 https://nvd.nist.gov/vuln/detail/CVE-2026-6287

Related records

Same weakness class

Other vulnerabilities in ShopLentor – All-in-One WooCommerce Growth & Store Enhancement Plugin

CVSS Vector

5.4

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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