---
id: CVE-2025-13966
title: >-
  The Paypal Payment Shortcode plugin for WordPress is vulnerable to Stored
  Cross-Site Scripting via the 'buttom_image' parameter of the
  [paypal-shortcode] shortcode in all versions up to, and including, 1.01 due to
  insufficient input sani…
summary: >-
  The Paypal Payment Shortcode plugin for WordPress is vulnerable to Stored
  Cross-Site Scripting via the 'buttom_image' parameter of the
  [paypal-shortcode] shortcode in all versions up to, and including, 1.01 due to
  insufficient input sani…
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2025-12-12'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T20:10:01.970'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-13966'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/paypal-payments-shortcode/tags/1.01/sls-paypal-payments-shortcode.php#L10
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/paypal-payments-shortcode/tags/1.01/sls-paypal-payments-shortcode.php#L55
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/paypal-payments-shortcode/trunk/sls-paypal-payments-shortcode.php#L10
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/paypal-payments-shortcode/trunk/sls-paypal-payments-shortcode.php#L55
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/b0b1fbb1-fc2c-4eb9-89c6-364ca8c385db?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00223
epssPercentile: 0.118
ingestedAt: '2026-10-07T20:46:46.880Z'
---

## Overview

The Paypal Payment Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'buttom_image' parameter of the [paypal-shortcode] shortcode in all versions up to, and including, 1.01 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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.