CVE-2026-3986 Calculated Fields Form <= 5.4.5.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Form Settings
Authenticated attackers with Contributor access can inject arbitrary scripts via form settings, leading to stored XSS execution for other users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3986?
CVE-2026-3986 is a medium-severity cross-site scripting vulnerability in codepeople Calculated Fields Form, published on 13 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Calculated Fields Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the form settings in all versions up to, and including, 5.4.5.0. This is due to insufficient capability checks on the form settings save handler and insufficient input sanitization of the `fcontent` field in `fhtml` field types. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Weakness: CWE-79
Which versions are affected by CVE-2026-3986?
How do I fix CVE-2026-3986?
No fix has been published for CVE-2026-3986 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-2026-3986 being exploited?
There is no known exploitation of CVE-2026-3986 in the wild and no public exploit code.
Sources
Also known as GHSA-2x88-jf9m-g87v.