MailPoet Newsletters 2.6.19 - Cross-site Scripting

Overview #

A Cross-site Scripting (XSS) vulnerability exists in MailPoet Newsletters WordPress Plugin version 2.6.19. The vulnerability allows remote attackers to inject arbitrary web script or HTML.

Vulnerability Details #

Affected Versions: 2.6.19 and earlier

Root Cause: Insufficient input validation and output encoding allows attackers to inject malicious scripts.

Exploitation Requirements #

• No authentication required
• Victim must visit a crafted URL or page

Impact #

Remote attackers can exploit this vulnerability to:

• Steal WordPress admin session cookies
• Compromise newsletter subscriber data
• Perform actions on behalf of admin users

Proof of Concept #

Details available upon request.

Solution #

Upgrade to a patched version of MailPoet Newsletters that includes proper input sanitization.

References #

• CVE-2015-7784

Timeline #

• 2016-01-01 — Discovered

Credits: Omar Kurt