How severe is CVE-2026-3498?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Wpblockart Blockart Blocks – Gutenberg Blocks, Page Builder ,Wordpress Block Plugin, Sections & Template Library

CVE-2026-3498

The BlockArt Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'clientId' block attribute in all versions up to, and including, 2.2.15. This is due to insufficient input sanitization and output escaping. This…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (12.0th 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

Wpblockart Blockart Blocks – Gutenberg Blocks, Page Builder ,Wordpress Block Plugin, Sections & Template Library — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-3498?: CVE-2026-3498 is a medium-severity vulnerability in Wpblockart Blockart Blocks – Gutenberg Blocks, Page Builder ,Wordpress Block Plugin, Sections & Template Library, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-04-11.
How severe is CVE-2026-3498?: Medium severity. CVSS v3 base score is 6.4 out of 10.