CVE-2025-13861 HTML Forms – Simple WordPress Forms Plugin <= 1.6.0 - Unauthenticated Stored Cross-Site Scripting
Unauthenticated attackers can inject arbitrary scripts via file upload metadata, executing them in the admin dashboard to potentially compromise administrator accounts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-13861?
CVE-2025-13861 is a medium-severity cross-site scripting vulnerability in linksoftware HTML Forms – Simple WordPress Forms Plugin, published on 17 Dec 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 HTML Forms – Simple WordPress Forms Plugin for WordPress is vulnerable to Unauthenticated Stored Cross-Site Scripting in all versions up to and including 1.6.0 due to insufficient sanitization of fabricated file upload field metadata before displaying it in the WordPress admin dashboard. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute whenever an administrator accesses the form submissions page.
Weakness: CWE-79
Which versions are affected by CVE-2025-13861?
How do I fix CVE-2025-13861?
No fix has been published for CVE-2025-13861 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-2025-13861 being exploited?
There is no known exploitation of CVE-2025-13861 in the wild and no public exploit code.
Sources
Also known as GHSA-229f-x533-c4r4.