EUVD-2026-11756Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessObtain Stripe PaymentIntent from legitimate transaction
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ExploitReuse PaymentIntent in different form submission
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ExecutionBypass amount verification check
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ImpactMark payment complete without actual charge
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
MITRE ATT&CK
1 technique across 1 tactic: Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Formidable Forms plugin version 6.28 or earlier with Stripe Link payment integration enabled. Attacker requires access to any valid PaymentIntent (from their own or intercepted transaction). No authentication required for form submission. |
| Impact | Severity: High (7.5/10.0) No EPSS data available yet HIGH RISK: Remotely exploitable without authentication — internet-facing instances are directly vulnerable |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely without authentication or user interaction, making it suitable for automated scanning and mass exploitation. |
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Alert meAnalysisAIv1 – Mar 13, 2026
High severity vulnerability in Formidable Forms (WordPress plugin). The Formidable Forms plugin for WordPress is vulnerable to a payment integrity bypass in all versions up to, and including, 6.28. This is due to the Stripe Link return handler (handle_one_time_stripe_link_return_url) marking payment records as complete based solely on the Stripe PaymentIntent status without comparing the intent's charged amount against the expected payment amount, and the `ve...
RemediationAI
Monitor Wordfence for patches and updates. Reference: https://www.wordfence.com/threat-intel/vulnerabilities/id/ebb4bc5a-9469-4733-acf3-d2dda5edb7af?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: Missing Authorization (CWE-862) CVSS 3.1: 7.5/10.0 — Attack Vector: Network | Complexity: Low | Privileges Required: None | User Interaction: None Attack Techniques: Authentication Bypass Source: Wordfence Authentication bypass allows attackers to access protected resources without valid 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:N/UI:N/S:U/C:N/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
The Formidable Forms plugin for WordPress is vulnerable to a payment integrity bypass in all versions up to, and including, 6.28. This is due to the Stripe Link return handler (handle_one_time_stripe_link_return_url) marking payment records as complete based solely on the Stripe PaymentIntent status without comparing the intent's charged amount against the expected payment amount, and the verify_intent() function validating only client secret ownership without binding intents to specific forms or actions. This makes it possible for unauthenticated attackers to reuse a PaymentIntent from a completed low-value payment to mark a high-value payment as complete, effectively bypassing payment for goods or services.
Executive ViewAI
A critical payment processing vulnerability in Formidable Forms allows attackers to bypass payment validation and mark transactions as complete without actually charging the correct amount, directly impacting revenue and customer trust. Organizations using this WordPress plugin for payment collection face immediate financial and compliance risks until remediation is completed.
Disable the Stripe Link payment handler immediately in plugin settings; implement Web Application Firewall (WAF) rules to detect and block requests to handle_one_time_stripe_link_return_url endpoints; isolate WordPress environment from direct internet access if possible; add manual payment verification process requiring comparison of charged amount versus order total before fulfillment; enable enhanced logging and alerting on payment status changes; consider temporary disablement of Formidable Forms payment features pending patch release.
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
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
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GitHub PoC
Exploit-DB