---
id: CVE-2026-118800
title: >-
  aBlocks <= 2.18.0 - Authenticated (Contributor+) Stored Cross-Site Scripting
  via 'headingTag' Block Attribute
summary: >-
  The aBlocks – Gutenberg Blocks, User Dashboard Builder, Popup Builder, Form
  Builder & Animation Builder plugin for WordPress is vulnerable to Stored
  Cross-Site Scripting via the 'headingTag' parameter in all versions up to, and
  including…
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'
cvssSource: cna
cwe:
  - CWE-79
vendor: kodezen
product: >-
  aBlocks – Gutenberg Blocks, User Dashboard Builder, Popup Builder, Form
  Builder & Animation Builder
affected:
  - >-
    ablocks_gutenberg_blocks_user_dashboard_builder_popup_builder_form_builder_animation_builder
    <= 2.18.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-07T18:01:14.668171Z'
published: '2026-11-07'
updated: '2026-11-07'
sourceUpdated: '2026-11-07T18:06:04.978Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-118800'
references:
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/fc051a2a-deb8-4888-abfb-c9d5ff27b0a7?source=cve
  - url: >-
      https://plugins.trac.wordpress.org/browser/ablocks/tags/2.18.0/includes/blocks/heading/block.php#L162
  - url: >-
      https://plugins.trac.wordpress.org/browser/ablocks/tags/2.18.0/includes/blocks/heading/block.php#L159
  - url: >-
      https://plugins.trac.wordpress.org/browser/ablocks/tags/2.18.0/includes/classes/block-base-abstract.php#L128
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3786225%40ablocks&new=3786225%40ablocks
tags:
  - cve.org
epss: 0.00197
epssPercentile: 0.09494
ingestedAt: '2026-11-07T07:12:31.867Z'
---

## Overview

The aBlocks – Gutenberg Blocks, User Dashboard Builder, Popup Builder, Form Builder & Animation Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'headingTag' parameter in all versions up to, and including, 2.18.0 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.

## Affected

- `ablocks_gutenberg_blocks_user_dashboard_builder_popup_builder_form_builder_animation_builder <= 2.18.0`

## Remediation

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