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Medium severity · published Mar 13, 2026
CVE-2026-3986
Calculated Fields Form <= 5.4.5.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Form Settings
6.4
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CF
Calculated Fields Form · codepeople
through 5.4.5.0 · source: vendor
Affected product
CF
Calculated Fields Form
codepeople
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-3986
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-3986
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/calculated-fields-form/tags/5.4.4.5/cp_calculatedfieldsf_free.php#L131
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/calculated-fields-form/tags/5.4.4.5/inc/cpcff_form.inc.php#L326
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/calculated-fields-form/tags/5.4.4.5/inc/cpcff_page_builders.inc.php#L41
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/calculated-fields-form/trunk/cp_calculatedfieldsf_free.php#L131
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/d650261a-ec0a-4538-ad59-0589712702fa?source=cve
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