---
id: CVE-2025-13705
title: >-
  The Custom Frames plugin for WordPress is vulnerable to Stored Cross-Site
  Scripting via the 'class' parameter of the 'customframe' shortcode in all
  versions up to, and including, 1.0.1 due to insufficient input sanitization
  and output es…
summary: >-
  The Custom Frames plugin for WordPress is vulnerable to Stored Cross-Site
  Scripting via the 'class' parameter of the 'customframe' shortcode in all
  versions up to, and including, 1.0.1 due to insufficient input sanitization
  and output es…
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: '2025-12-13'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T20:10:01.970'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-13705'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/custom-frames/tags/1.0.1/class.customframes.php#L65
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/custom-frames/trunk/class.customframes.php#L65
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/56f3aa7a-a6f2-42c7-b855-b083fe58f466?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00216
epssPercentile: 0.10945
ingestedAt: '2026-10-07T20:46:46.928Z'
---

## Overview

The Custom Frames plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'class' parameter of the 'customframe' shortcode in all versions up to, and including, 1.0.1 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.