Payment forms, Buy now buttons, and Invoicing System | GetPaid <= 2.8.61 — Unauthenticated Stored Cross-Site Scripting via 'mmdwqzpoxadd' Parameter
CVE-2026-111110Published · Updated Action summary
Affected: ≤2.8.61Update to 2.8.62 or newer
All remediation steps- Severity
- High7.2
- CVSS
- 7.2CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/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:CScope- Changed
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-79 Cross-Site Scripting
- Required access
- No account needed
- Exploit prediction (EPSS)
- 0.3% chance in 30 days20th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
Payment forms, Buy now buttons, and Invoicing System | GetPaid invoicing
- Affected≤ 2.8.61
- Patched in2.8.62
Update to 2.8.62 or newer.
You are affected if you run ≤ 2.8.61. Version 2.8.62 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Payment forms, Buy now buttons, and Invoicing System | GetPaid.
- 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 2.8.62, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Payment forms, Buy now buttons, and Invoicing System | GetPaid to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to UKO.
The Payment forms, Buy now buttons, and Invoicing System | GetPaid plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'mmdwqzpoxadd' parameter in all versions up to, and including, 2.8.61 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The required nonce (getpaid_form_nonce) is publicly emitted to all visitors via wp_localize_script as WPInv.formNonce, meaning no authentication or prior nonce leak is needed; the stored payload fires when an administrator views the affected invoice's Payment Form Details metabox.
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 Payment forms, Buy now buttons, and Invoicing System | GetPaid
All 10| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Unauthenticated Insecure Direct Object Reference ≤2.8.62Update to 2.8.63 | CVE-2026-119748 | |
| Medium5.3 | Unauthenticated Payment Processing Bypass ≤2.8.62Update to 2.8.63 | CVE-2026-119749 | |
| Medium4.3 | Missing Authorization ≤2.8.62Update to 2.8.63 | CVE-2026-119747 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤2.8.62Update to 2.8.63 | CVE-2026-115609 | |
| Medium6.6 | Authenticated (Administrator+) Local File Inclusion via Payment Form 'type' Element Field ≤2.8.56Update to 2.8.57 | CVE-2026-17605 |
- Medium5.3Unauthenticated Insecure Direct Object Reference
≤2.8.62Update to 2.8.63
- Medium5.3Unauthenticated Payment Processing Bypass
≤2.8.62Update to 2.8.63
- Medium4.3Missing Authorization
≤2.8.62Update to 2.8.63
- High7.2Unauthenticated Stored Cross-Site Scripting
≤2.8.62Update to 2.8.63
- Medium6.6Authenticated (Administrator+) Local File Inclusion via Payment Form 'type' Element Field
≤2.8.56Update to 2.8.57
Same weakness (Cross-Site Scripting)
All Cross-Site Scripting| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity high, CVSS 7.2
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. 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.
- EPSS
- Exploit Prediction Scoring System by FIRST.org.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.