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 makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (23.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
Weakness classification (CWE)
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.