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CVE-2026-3498

BlockArt Blocks <= 2.2.15 - Authenticated (Author+) Stored Cross-Site Scripting via 'clientId' Block Attribute

Published: Apr 11, 2026Updated: Apr 11, 2026 Sources: CVE List
NVD MITRE
6.4CVSS
MEDIUM

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.

EPSS Score
0.0%
Top 91.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None

Weaknesses

CWE-79CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

BlockArt Blocks – Gutenberg Blocks, Page Builder Blocks ,WordPress Block Plugin, Sections & Template Library
wpblockart

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/7d0cb432-785a-4f38-830f-72b95e65aa5a?source=cve
wordfence.com
https://plugins.trac.wordpress.org/browser/blockart-blocks/tags/2.2.15/includes/BlockTypes/QueryLoop.php#L43
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/blockart-blocks/tags/2.2.15/includes/BlockTypes/PostTemplate.php#L67
plugins.trac.wordpress.org
and 1 more references View all →

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