CVE-2026-111122
Received Received - Intake

Stored DOM-Based XSS in SiteOrigin CSS WordPress Plugin

Publication date: 2026-10-16

Last updated on: 2026-10-16

Assigner: Wordfence

Description
The SiteOrigin CSS plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'href' parameter in all versions up to, and including, 1.6.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Successful exploitation requires the malicious comment to be approved and an administrator to subsequently open the Visual Inspector and click the attacker's anchor link, both of which are plausible interactions during routine comment triage.

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Meta Information

Published
2026-10-16
Last Modified
2026-10-16
Generated
2026-10-16
AI Q&A
2026-10-16
EPSS Evaluated
N/A
NVD
CVE-2026-111122
EUVD
EUVD-2026-102675

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
gpriday SiteOrigin CSS 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

The SiteOrigin CSS plugin for WordPress has a stored DOM-based Cross-Site Scripting (XSS) vulnerability in versions up to 1.6.7. It occurs due to insufficient input sanitization and output escaping in the 'href' parameter. Attackers can inject malicious scripts that execute when users access infected pages.

Detection Guidance

Check for the SiteOrigin CSS plugin versions up to 1.6.7 in your WordPress installation. Inspect comments containing malicious href parameters in the DOM. Use browser developer tools to review injected scripts in pages.

Impact Analysis

Unauthenticated attackers can inject scripts that run when users visit compromised pages. Exploitation requires comment approval and an admin opening the Visual Inspector to click a malicious link. This could lead to unauthorized actions, data theft, or defacement of affected websites.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by enabling stored cross-site scripting attacks. If exploited, it may allow unauthorized script execution in user browsers, potentially leading to data theft or manipulation. This could violate data protection requirements under GDPR (e.g., Article 32 security of processing) and HIPAA (e.g., safeguards for protected health information).

Mitigation Strategies

Update the SiteOrigin CSS plugin to the latest version beyond 1.6.7. Remove any suspicious comments with injected scripts. Implement strict input validation for href parameters in WordPress.

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