Email Subscription Popup <= 1.2.18 - Reflected Cross-Site Scripting

6.1
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2023-6527
CVSS 6.1 (Medium)
Publicly Published December 5, 2023
Last Updated December 6, 2023
Researcher 0x9567b

Description

The Email Subscription Popup plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the HTTP_REFERER header in all versions up to, and including, 1.2.18 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.

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Vulnerability Details for Email Subscription Popup — Newsletter & GDPR Consent

Software Type Plugin
Software Slug email-subscribe (view on wordpress.org)
Patched? Yes
Remediation Update to version 1.2.19, or a newer patched version
Affected Version
  • <= 1.2.18
Patched Version
  • 1.2.19

Recent vulnerabilities in Email Subscription Popup — Newsletter & GDPR Consent

# Title CVE ID CVSS Researchers Date
1 Email Subscription Popup <= 1.2.26 - Authenticated (Administrator+) Stored Cross-Site Scripting CVE-2025-49912 4.4 Kim YunJi October 22, 2025
2 Email Subscription Popup <= 1.2.23 - Authenticated (Administrator+) SQL Injection CVE-2025-24587 4.9 Webula January 24, 2025
3 Email Subscription Popup <= 1.2.22 - Authenticated (Contributor+) Stored Cross-Site Scripting via print_email_subscribe_form Shortcode CVE-2024-11195 6.4 Peter Thaleikis November 18, 2024
4 Email Subscription Popup <= 1.2.20 - Unauthenticated Stored Cross-Site Scripting CVE-2024-27960 6.1 stealthcopter March 13, 2024
5 Email Subscription Popup <= 1.2.19 - Reflected Cross-Site Scripting CVE-2023-6555 6.1 Erwan LR December 15, 2023
6 Email Subscription Popup <= 1.2.16 - Reflected Cross-Site Scripting CVE-2023-30489 6.1 minhtuanact April 7, 2023

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