CVE-2024-13739 Newsletters <= 4.9.9.7 - Reflected Cross-Site Scripting via To Parameter

What is CVE-2024-13739?

CVE-2024-13739 is a medium-severity cross-site scripting vulnerability in contrid Newsletters, published on 22 Mar 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The Newsletters plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the "to" parameter in all versions up to, and including, 4.9.9.7 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 an admin user into performing an action such as clicking on a link.

Weakness: CWE-79

Which versions are affected by CVE-2024-13739?

It affects 1 product.

Products include Tribulant Newsletters.

How do I fix CVE-2024-13739?

No fix has been published for CVE-2024-13739 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2024-13739 being exploited?

There is no known exploitation of CVE-2024-13739 in the wild and no public exploit code.

Other vulnerabilities in contrid Newsletters

• CVE-2018-20987 Deserialization in n/a Critical 9.8
• CVE-2024-8247 Newsletters <= 4.9.9.2 - Authenticated Privilege Escalation High 8.8
• CVE-2019-14788 Path traversal in n/a High 8.8
• CVE-2025-4857 Newsletters <= 4.9.9.9 - Authenticated (Administrator+) Local File Inclusion High 7.2
• CVE-2023-4797 Newsletter Lite < 4.9.3 - Admin+ Command Injection High 7.2

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-6w88-4m7x-9gxg.