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Formidable Forms CVE-2024-23522

MEDIUM
Basic XSS (CWE-80)
2024-05-17 audit@patchstack.com
XSS Formidable Forms Strategy11
6.1
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-80
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization HTML tag escaping
MITRE ATT&CK

1 technique across 1 tactic: Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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Impact

CVSS score of 6.1 (MEDIUM). Attack characteristics: network attack vector, low complexity, no privileges required, user interaction required.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAI

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Strategy11 Form Builder Team Formidable Forms allows Code Injection.7. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified under CWE-80. Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Strategy11 Form Builder Team Formidable Forms allows Code Injection.7. Affected products include: Strategy11 Formidable Forms. Version information: through 6.7..

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 6.1 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

DescriptionNVD

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Strategy11 Form Builder Team Formidable Forms allows Code Injection.This issue affects Formidable Forms: from n/a through 6.7.

Threat Intelligence Overview

EPSS Score
0.3%
Top 74% exploitable
Data Quality
2 sources
Confidence: Low
NVD CVE.org EPSS

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.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

30
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +30
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting MEDIUM

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

Affected Products (CPE)NVD

cpe:2.3:a:strategy11:formidable_forms:*:*:*:*:free:wordpress:*:*

More in Formidable Forms

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8.8 Jun 27

The Formidable Forms WordPress plugin before 6.3.1 does not adequately authorize the user or validate the plugin URL in

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Unauthenticated remote attackers can exhaust the daily rate-limit allowance for payment gateway verification in the Form
CVE-2026-19857 MEDIUM POC
4.8 Sep 16

Unauthenticated visitors can inject arbitrary WordPress shortcodes, including attacker-chosen attributes, into Formidabl
CVE-2024-9768 MEDIUM POC
4.8 Nov 21

The Formidable Forms WordPress plugin before 6.14.1 does not sanitise and escape some of its settings, which could allow
CVE-2026-85641 MEDIUM POC
4.3 Sep 16

Stored HTML injection in the WordPress Formidable Forms plugin before 6.35 allows unauthenticated visitors to submit for
CVE-2024-0660 MEDIUM
6.1 Feb 05

The Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder plugin for WordPress i
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5.4 Jul 31

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Missing Authorization vulnerability in Strategy11 Team Formidable Forms formidable allows Exploiting Incorrectly Configu

Same weakness CWE-80 – Basic XSS

View all
CVE-2026-91130 CRITICAL POC
9.3
CVE-2025-30210 HIGH POC
8.7
CVE-2025-66450 HIGH POC
8.6
CVE-2025-30161 HIGH POC
8.4
CVE-2025-39663 HIGH POC
8.5
CVE-2024-32484 HIGH POC
8.2
CVE-2026-2995 HIGH POC
7.7
CVE-2024-25639 HIGH POC
7.5

Same technique XSS

View all
CVE-2017-9248 CRITICAL POC
9.8
CVE-2020-3580 MEDIUM POC
6.1
CVE-2013-1710 CRITICAL POC
10.0
CVE-2013-7389 MEDIUM POC
4.3
CVE-2021-25299 MEDIUM POC
6.1
CVE-2014-2120 MEDIUM
6.1
CVE-2023-40000 HIGH POC
8.3
CVE-2024-52875 HIGH POC
8.8

References

Advisories & patches
REF https://patchstack.com/database/vulnerability/formidable/wordpress-formidable-forms-plugin-6-7-content-injection-vulnerability?_s_id=cve

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