CVE-2024-12743 MailPoet < 5.5.2 - Admin+ Stored XSS
Admins can inject malicious scripts via unsanitized settings in MailPoet, enabling stored XSS attacks in multisite environments.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2024-12743?
CVE-2024-12743 is a medium-severity cross-site scripting vulnerability in Unknown MailPoet, published on 15 May 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The MailPoet WordPress plugin before 5.5.2 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).
Weakness: CWE-79
Which versions are affected by CVE-2024-12743?
It affects 1 product.
Products include Automattic Mailpoet.
How do I fix CVE-2024-12743?
No fix has been published for CVE-2024-12743 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-2024-12743 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-12743 exists.
Other vulnerabilities in Unknown MailPoet
Sources
Also known as GHSA-9fcp-xcwr-cjm9.