CVE-2026-11996
Received Received - Intake

Stored XSS in Advanced Popups WordPress Plugin

Publication date: 2026-09-16

Last updated on: 2026-09-16

Assigner: Wordfence

Description
The Advanced Popups plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'Notification Button Link' Field in all versions up to, and including, 1.2.3 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.

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Meta Information

Published
2026-09-16
Last Modified
2026-09-16
Generated
2026-10-06
AI Q&A
2026-09-16
EPSS Evaluated
2026-10-05
NVD
CVE-2026-11996
EUVD
EUVD-2026-80100

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
advanced_popups advanced_popups to 1.2.3 (inc)

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

This is a Stored Cross-Site Scripting (XSS) vulnerability in the Advanced Popups WordPress plugin affecting versions up to 1.2.3. It occurs due to insufficient input sanitization and output escaping in the 'Notification Button Link' field. Authenticated attackers with author-level access or higher can inject malicious scripts that execute when users visit affected pages.

Detection Guidance

This vulnerability can be detected by checking if the Advanced Popups plugin for WordPress is installed and its version is up to 1.2.3. Inspect WordPress admin panels for the plugin and verify version numbers. No specific commands are provided in the context.

Impact Analysis

If exploited, this vulnerability allows attackers to inject malicious scripts into your WordPress site. These scripts could steal user data, perform actions on behalf of users, or redirect visitors to malicious sites. Users with author-level access or higher pose the greatest risk as they can exploit this to compromise visitor sessions.

Compliance Impact

This vulnerability could lead to data breaches, which may violate GDPR and HIPAA requirements for data protection and security. Organizations could face fines or penalties for failing to protect user data from unauthorized access or script injection attacks.

Mitigation Strategies
  • Update the Advanced Popups plugin to the latest version beyond 1.2.3 if available.
  • Remove or disable the Advanced Popups plugin if updates are not available.
  • Restrict author-level and above user roles to minimize attack surface.

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