Stored Cross-Site Scripting Vulnerability in aBlocks WordPress Plugin
CVE-2026-118800

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Ablocks – Gutenberg Blocks, User Dashboard Builder, Popup Builder, Form Builder & Animation Builder
Vendor
CVE Published:
7 November 2026

What is CVE-2026-118800?

The aBlocks plugin for WordPress is susceptible to a Stored Cross-Site Scripting vulnerability due to inadequate input sanitization and output escaping of the 'headingTag' parameter. Authenticated attackers with contributor-level access can exploit this flaw, injecting arbitrary web scripts that execute when any user visits the compromised page. This vulnerability affects all versions up to and including 2.18.0, posing a significant risk to website integrity and user security.

Affected Version(s)

aBlocks – Gutenberg Blocks, User Dashboard Builder, Popup Builder, Form Builder & Animation Builder 0 <= 2.18.0

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/ablocks/tags/2...
https://plugins.trac.wordpress.org/browser/ablocks/tags/2...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Wordfence PRISM
.