CVE-2026-118800: medium-severity vulnerability in kodezen aBlocks – Gutenberg Blocks, User…
aBlocks <= 2.18.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'headingTag' Block Attribute
Published
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.4epss 0.2%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Affected products
kodezen · aBlocks – Gutenberg Blocks, User Dashboard Builder, Popup Builder, Form Builder & Animation BuilderRelated CVEs — kodezen aBlocks – Gutenberg Blocks, User…
In the same product, most dangerous first.
CVE-2026-110018HIGHaBlocks <= 2.17.0 - Authenticated (Contributor+) Privilege Escalation to 'roleSlug' Block AttributeEPSS 0.4%CVE-2024-13465MEDIUMaBlocks – WordPress Gutenberg Blocks <= 1.6.1 - Authenticated (Contributor+) Stored Cross-Site ScriptingEPSS 0.3%CVE-2025-12449MEDIUMaBlocks – WordPress Gutenberg Blocks <= 2.4.0 - Missing Authorization to Authenticated (Subscriber+) Settings ModificationEPSS 0.2%CVE-2026-118801MEDIUMaBlocks <= 2.18.0 - Authenticated (Contributor+) Sensitive Information Exposure in 'ablocks_template' ShortcodeEPSS 0.2%
References
https://plugins.trac.wordpress.org/browser/ablocks/tags/2.18.0/includes/blocks/heading/block.php#L159https://plugins.trac.wordpress.org/browser/ablocks/tags/2.18.0/includes/blocks/heading/block.php#L162https://plugins.trac.wordpress.org/browser/ablocks/tags/2.18.0/includes/classes/block-base-abstract.php#L128https://plugins.trac.wordpress.org/changeset?reponame=&old=3786225%40ablocks&new=3786225%40ablockshttps://www.wordfence.com/threat-intel/vulnerabilities/id/fc051a2a-deb8-4888-abfb-c9d5ff27b0a7?source=cve