---
id: CVE-2026-17586
title: >-
  The VK All in One Expansion Unit plugin for WordPress is vulnerable to Stored
  Cross-Site Scripting via 'vkExUnit_cta_img_position' Post Meta in all versions
  up to, and including, 9.118.0 due to insufficient input sanitization and
  output …
summary: >-
  The VK All in One Expansion Unit plugin for WordPress is vulnerable to Stored
  Cross-Site Scripting via 'vkExUnit_cta_img_position' Post Meta in all versions
  up to, and including, 9.118.0 due to insufficient input sanitization and
  output …
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
vendor: kurudrive
product: VK All in One Expansion Unit
affected:
  - vk_all_in_one_expansion_unit <= 9.118.0
published: '2026-09-18'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T15:17:06.410'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-17586'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.116.0/inc/block-editor-panels/enqueue.php#L195
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.116.0/inc/call-to-action/package/block/index.php#L281
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.116.0/inc/call-to-action/package/class-vk-call-to-action.php#L747
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.116.0/inc/call-to-action/package/view-actionbox.php#L72
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.118.0/inc/block-editor-panels/enqueue.php#L195
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.118.0/inc/call-to-action/package/block/index.php#L281
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.118.0/inc/call-to-action/package/class-vk-call-to-action.php#L747
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.118.0/inc/call-to-action/package/view-actionbox.php#L72
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3631372%40vk-all-in-one-expansion-unit&new=3631372%40vk-all-in-one-expansion-unit
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/04b9c0c4-3f1a-4984-9b24-6de3dc78bde0?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-18T14:37:01.052086Z'
epss: 0.00307
epssPercentile: 0.23661
ingestedAt: '2026-09-18T08:38:04.101Z'
---

## Overview

The VK All in One Expansion Unit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'vkExUnit_cta_img_position' Post Meta in all versions up to, and including, 9.118.0 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. The sanitize_text_field callback applied on save does not strip double-quote characters or on* event-handler attributes, and the output filter Vk_Call_To_Action::safe_kses_post() only rewrites disallowed iframe elements while returning all other content verbatim, leaving the injected payload intact in the rendered HTML.

## Remediation

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