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CVE Record

CVE-2021-4417: Forminator – Contact Form, Payment Form & Custom Form Builder <= 1.13.4 - Cross-Site Request Forgery Bypass

The Forminator – Contact Form, Payment Form & Custom Form Builder plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.13.4. This is due to missing or incorrect nonce validation on the listen_for_saving_export_schedule() function. This makes it possible for unauthenticated attackers to export form submissions via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

MediumCVSS 5.4Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-4417 affects the Forminator WordPress plugin through version 1.13.4. A malicious site could trick a logged-in administrator into triggering an unintended export of form submissions. The issue requires administrator interaction, but exposed form data may include sensitive customer or lead information.

Executive priority

Handle this as a moderate-priority WordPress exposure. It is not described as actively exploited, but it can expose submitted form data if an administrator is tricked. Patch during the next normal security maintenance window, sooner for sites handling regulated or sensitive submissions.

Technical view

The issue is CWE-352 CSRF caused by missing or incorrect nonce validation in Forminator's listen_for_saving_export_schedule() function. Sources describe unauthenticated attackers causing export of form submissions through a forged request if an administrator performs the attacker-controlled action. CVSS is 5.4, with low complexity and required user interaction.

Likely exposure

Exposure is limited to WordPress sites running Forminator versions up to and including 1.13.4, especially sites collecting sensitive form submissions. Sites without the plugin, or running a fixed newer version, are not indicated as affected by the provided sources.

Exploitation context

The source bundle does not show CISA KEV listing or confirmed active exploitation. Practical exploitation depends on social engineering an authenticated site administrator into taking an action that submits a forged request.

Researcher notes

The CVE metadata includes inconsistent affected-product structure, but the narrative, Wordfence reference, Nintechnet fixed-vulnerability coverage, and WordPress Trac changeset support the Forminator <=1.13.4 CSRF assessment. Avoid assuming broader impact beyond export of form submissions from the provided evidence.

Mitigation direction

  • Update Forminator to a fixed version newer than 1.13.4 or the current vendor release.
  • Review vendor guidance and plugin changelog before relying on compensating controls.
  • Limit WordPress administrator access to trusted users only.
  • Treat stored form submissions as sensitive data and reduce retention where possible.

Validation and detection

  • Inventory WordPress sites for Forminator and record installed plugin versions.
  • Prioritize any instance running version 1.13.4 or earlier.
  • Confirm the installed code includes corrected nonce validation for export scheduling.
  • Review logs and admin activity for unexpected form submission exports.
Prepared
Confidence
high
Sources
5

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-352: User-session and phishing behavior lookup

Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-4417 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
10Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
5.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N2.82.5Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.4Medium
CVSS 3.1 vector shape for CVE-2021-4417Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
wpmudevForminator Forms – Contact Form, Payment Form & Custom Form Builder0unaffected
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-352 · source CWE mapping

Cross-Site Request Forgery (CSRF)

Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.