Forminator – Contact Form, Payment Form & Custom Form Builder <= 1.52.0 — Missing Authorization to Unauthenticated Stripe PaymentIntent Reuse / Underpayment Bypass via 'paymentid' Parameter
CVE-2026-2729Published · Updated Action summary
Affected: ≤1.52.0Update to 1.52.1 or newer
All remediation steps- Severity
- Medium5.3
- CVSS
- 5.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Forminator Forms – Contact Form, Payment Form & Custom Form Builder forminator
- Affected≤ 1.52.0
- Patched in1.52.1
Update to 1.52.1 or newer.
You are affected if you run ≤ 1.52.0. Version 1.52.1 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Forminator Forms – Contact Form, Payment Form & Custom Form Builder.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 1.52.1, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Forminator Forms – Contact Form, Payment Form & Custom Form Builder to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Kittipat Jitphonchana.
The Forminator plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.52.0. This is due to the plugin not properly verifying that a user is authorized to perform an action when processing attacker-supplied Stripe PaymentIntent identifiers in the public payment flow. This makes it possible for unauthenticated attackers to submit high-value paid forms as completed by reusing a previously succeeded low-value Stripe PaymentIntent, resulting in underpayment/payment bypass conditions.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Forminator Forms – Contact Form, Payment Form & Custom Form Builder
All 82| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Unauthenticated Information Exposure <1.58.4Update to 1.58.4 | CVE-2026-111597 | |
| High7.3 | Unauthenticated Privilege Escalation <1.58.4Update to 1.58.4 | CVE-2026-111579 | |
| Medium6.4 | Authenticated (Subscriber+) Stored Cross-Site Scripting ≤1.58.3Update to 1.58.4 | CVE-2026-115952 | |
| Medium5.3 | Missing Authorization ≤1.58.3Update to 1.58.4 | CVE-2026-116859 | |
| Medium5.4 | Authenticated (Subscriber+) Arbitrary Shortcode Injection ≤1.58.3Update to 1.58.4 | CVE-2026-116858 |
- Medium5.3Unauthenticated Information Exposure
<1.58.4Update to 1.58.4
- High7.3Unauthenticated Privilege Escalation
<1.58.4Update to 1.58.4
- Medium6.4Authenticated (Subscriber+) Stored Cross-Site Scripting
≤1.58.3Update to 1.58.4
- Medium5.3Missing Authorization
≤1.58.3Update to 1.58.4
- Medium5.4Authenticated (Subscriber+) Arbitrary Shortcode Injection
≤1.58.3Update to 1.58.4
Timeline
CVE published
Severity medium, CVSS 5.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.