CVE-2023-6527

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    CVE-2023-6527

    Published: 6 Dec 2023Last Modified: 12 Mar 2026

    Summary:

    Details: 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.

    References: , https://www.wordfence.com/threat-intel/vulnerabilities/id/5f84814e-f7b7-4228-b331-63027a0770af?source=cve, https://plugins.trac.wordpress.org/browser/email-subscribe/tags/1.2.19/wp-email-subscription.php?rev=3005188#L2125

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2023-6527 | CVE-DB