XSS in Codepeople Calculated Fields Form
CVE-2026-3986
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.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (14.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Codepeople Calculated Fields Form — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-3986?
- CVE-2026-3986 is a medium-severity vulnerability in Codepeople Calculated Fields Form, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-03-13.
- How severe is CVE-2026-3986?
- Medium severity. CVSS v3 base score is 6.4 out of 10.