High severity · published Oct 4, 2026
CVE-2026-103354
WordPress Gutenberg Blocks by Kadence Blocks plugin <= 3.7.11.1 - Cross Site Scripting (XSS) vulnerability
7.1
CVSS
0.1%
EPSS
No
On KEV
Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Liquid Web / StellarWP Gutenberg Blocks by Kadence Blocks kadence-blocks allows Stored XSS.This issue affects Gutenberg Blocks by Kadence Blocks: from n/a through 3.7.11.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GB
Gutenberg Blocks by Kadence Blocks · Liquid Web / StellarWP
through 3.7.11.1 · source: vendor
Affected product
GB
Gutenberg Blocks by Kadence Blocks
Liquid Web / StellarWP
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-103354
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-103354
vdb-entry
https://patchstack.com/database/wordpress/plugin/kadence-blocks/vulnerability/wordpress-gutenberg-blocks-by-kadence-blocks-plugin-3-7-11-1-cross-site-scripting-xss-vulnerability?_s_id=cve
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