EUVD-2026-11770Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK
2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | Severity: Medium (6.4/10.0) No EPSS data available yet Remotely exploitable with low-privilege access — any authenticated user could exploit this Scope changed: exploitation can impact resources beyond the vulnerable component |
| Exploit ScenarioDerived | An authenticated attacker with low-level access can exploit this vulnerability remotely to escalate privileges or access unauthorized resources. |
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Alert meAnalysisAIv1 – Mar 13, 2026
Medium severity vulnerability in WordPress plugin. 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-le...
RemediationAI
Monitor Wordfence for patches and updates. Reference: https://www.wordfence.com/threat-intel/vulnerabilities/id/d650261a-ec0a-4538-ad59-0589712702fa?source=cve
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Vulnerability Type: Cross-Site Scripting (XSS) (CWE-79) CVSS 3.1: 6.4/10.0 — Attack Vector: Network | Complexity: Low | Privileges Required: Low | User Interaction: None Attack Techniques: Xss Source: Wordfence Cross-site scripting allows injection of malicious scripts that execute in victims' browsers, potentially stealing sessions or credentials.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
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.
Executive ViewAI
Organizations using Calculated Fields Form should be aware of moderate risk from CVE-2026-3986, a cross-site scripting vulnerability rated CVSS 6.4. Attackers could inject scripts to steal sessions or perform actions as authenticated users. Organizations should apply vendor updates when available and monitor for exploitation.
Apply vendor patch. If patching is delayed: implement CSP headers, enable HttpOnly cookies, deploy WAF XSS rules.
Threat Intelligence Overview
NVD
CVE.org
EPSS
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.
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GitHub PoC
Exploit-DB