SureForms <= 2.5.2 — Unauthenticated Payment Amount Validation Bypass via 'form_id'
CVE-2026-4987Published · Updated Action summary
Affected: ≤2.5.2Update to 2.6.0 or newer
All remediation steps- Severity
- High7.5
- CVSS
- 7.5CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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:HIntegrity- High
A:NAvailability- None
- Weakness
- CWE-20 Improper Input Validation
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz sureforms
- Affected≤ 2.5.2
- Patched in2.6.0
Update to 2.6.0 or newer.
You are affected if you run ≤ 2.5.2. Version 2.6.0 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz.
- 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 2.6.0, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to AlexHenry.
The SureForms – Contact Form, Payment Form & Other Custom Form Builder plugin for WordPress is vulnerable to Payment Amount Bypass in all versions up to, and including, 2.5.2. This is due to the create_payment_intent() function performing a payment validation solely based on the value of a user-controlled parameter. This makes it possible for unauthenticated attackers to bypass configured form payment-amount validation and create underpriced payment/subscription intents by setting form_id to 0.
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 SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz
All 25| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Missing Authorization ≤2.13.0Update to 2.13.1 | CVE-2026-125763 | |
| Medium5.3 | Missing Authorization ≤2.13.0Update to 2.13.1 | CVE-2026-120842 | |
| Medium5.3 | Missing Authorization ≤2.12.9Update to 2.13.0 | CVE-2026-116387 | |
| Medium4.7 | SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz <= 2.12.9 -Unauthenticated Arbitrary HTML Injection ≤2.12.9Update to 2.13.0 | CVE-2026-116402 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤2.12.7Update to 2.12.8 | CVE-2026-108495 |
- Medium5.3Missing Authorization
≤2.13.0Update to 2.13.1
- Medium5.3Missing Authorization
≤2.13.0Update to 2.13.1
- Medium5.3Missing Authorization
≤2.12.9Update to 2.13.0
- Medium4.7SureForms – Contact Form Builder, AI Forms, Payment Form, Survey & Quiz <= 2.12.9 -Unauthenticated Arbitrary HTML Injection
≤2.12.9Update to 2.13.0
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤2.12.7Update to 2.12.8
Timeline
CVE published
Severity high, CVSS 7.5
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.