CVE-2025-12018 MembershipWorks <= 6.14 - Authenticated (Admin+) Stored Cross-Site Scripting
Administrators can inject scripts into admin settings, affecting multi-site or restricted HTML installations, potentially leading to session hijacking or malicious actions.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-12018?
CVE-2025-12018 is a medium-severity cross-site scripting vulnerability in sourcefound MembershipWorks – Membership, Events & Directory, published on 12 Nov 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The MembershipWorks – Membership, Events & Directory plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 6.14 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Weakness: CWE-79
Which versions are affected by CVE-2025-12018?
How do I fix CVE-2025-12018?
No fix has been published for CVE-2025-12018 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-2025-12018 being exploited?
There is no known exploitation of CVE-2025-12018 in the wild and no public exploit code.
Sources
Also known as GHSA-wh66-69pc-r9r5.