The MailUp Auto Subscription plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.1.0. This is due to missing or incorrect nonce validation on the mas_options function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
CVE ID: CVE-2024-13521
CVSS Base Severity: MEDIUM
CVSS Base Score: 6.1
Vendor: ghera74
Product: MailUp Auto Subscription
EPSS Score: 0.05% (probability of being exploited)
EPSS Percentile: 19.76% (scored less or equal to compared to others)
EPSS Date: 2025-02-27 (when was this score calculated)