XSS in Godaddy Page Builder Gutenberg Blocks – Coblocks
CVE-2026-4801
The Page Builder Gutenberg Blocks – CoBlocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via external iCal feed data in all versions up to, and including, 3.1.16 due to insufficient output escaping of event titles, de…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.000 (5.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Godaddy Page Builder Gutenberg Blocks – Coblocks — versions 0
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/bde0aef3-aa61-4ee7-9cbf-9f51c…
- plugins.trac.wordpress.org/browser/coblocks/trunk/src/blocks/events/index.php
- plugins.trac.wordpress.org/browser/coblocks/tags/3.1.16/src/blocks/events/index…
- plugins.trac.wordpress.org/browser/coblocks/trunk/src/blocks/events/index.php
- plugins.trac.wordpress.org/browser/coblocks/tags/3.1.16/src/blocks/events/index…
- plugins.trac.wordpress.org/browser/coblocks/trunk/src/blocks/events/index.php
- plugins.trac.wordpress.org/browser/coblocks/tags/3.1.16/src/blocks/events/index…
- plugins.trac.wordpress.org/browser/coblocks/trunk/src/blocks/events/index.php
- plugins.trac.wordpress.org/browser/coblocks/tags/3.1.16/src/blocks/events/index…
- plugins.trac.wordpress.org/browser/coblocks/trunk/src/blocks/events/index.php
Frequently asked questions
- What is CVE-2026-4801?
- CVE-2026-4801 is a medium-severity vulnerability in Godaddy Page Builder Gutenberg Blocks – Coblocks, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-04-18.
- How severe is CVE-2026-4801?
- Medium severity. CVSS v3 base score is 6.4 out of 10.