Description

The Timeline Blocks for Gutenberg plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'titleTag' attribute of the timeline-blocks/tb-timeline-blocks block in all versions up to, and including, 1.1.10 due to insufficient input sanitization and output escaping on user supplied attributes. 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.

INFO

Published Date :

2026-04-28T04:28:20.578Z

Last Modified :

2026-04-28T14:34:04.680Z

Source :

Wordfence
AFFECTED PRODUCTS

The following products are affected by CVE-2026-6551 vulnerability.

Vendors Products
Techeshta
  • Timeline Blocks For Gutenberg
Wordpress
  • Wordpress
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-6551.

URL Resource
https://plugins.trac.wordpress.org/browser/timeline-blocks/tags/1.1.10/src/blocks/index.php#L202 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/timeline-blocks/tags/1.1.10/src/blocks/index.php#L343 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/timeline-blocks/trunk/src/blocks/index.php#L200 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/timeline-blocks/trunk/src/blocks/index.php#L202 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/timeline-blocks/trunk/src/blocks/index.php#L342 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/timeline-blocks/trunk/src/blocks/index.php#L343 cve-icon cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/393d1b30-19f8-454d-84c0-0b539953e1fe?source=cve cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact