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.