WP-Members Membership Plugin <= 3.5.7 — Authenticated (Subscriber+) Stored Cross-Site Scripting via WooCommerce Checkout Multicheckbox/Multiselect Field
CVE-2026-96565Published · Updated Action summary
Affected: ≤3.5.7Update to 3.5.8 or newer
All remediation steps- Severity
- Medium6.4
- CVSS
- 6.4CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:CScope- Changed
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-79 Cross-Site Scripting
- Required access
- Unknown
- Exploit prediction (EPSS)
- 0.3% chance in 30 days28th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
WP-Members Membership Plugin wp-members
- Affected≤ 3.5.7
- Patched in3.5.8
Update to 3.5.8 or newer.
You are affected if you run ≤ 3.5.7. Version 3.5.8 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under WP-Members Membership Plugin.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 3.5.8, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch WP-Members Membership Plugin to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Jacek Sowiński (dzaku).
The WP-Members Membership Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via WooCommerce Checkout Multicheckbox/Multiselect Field (scalar bypass of wpmem_sanitize_array) in all versions up to, and including, 3.5.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable via the WooCommerce classic checkout path, as the sibling registration, profile, and account-edit handlers implode the value before sanitization, which raises a PHP 8 TypeError on scalar input and fails closed.
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 WP-Members Membership Plugin
All 22| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium4.3 | Missing Authorization ≤3.5.7Update to 3.5.8 | CVE-2026-61994 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤3.5.6Update to 3.5.7 | CVE-2026-84960 | |
| Medium6.5 | Authenticated (Contributor+) SQL Injection via 'order_by' Shortcode Attribute ≤3.5.5.1Update to 3.5.6 | CVE-2026-2363 | |
| Medium5.4 | Authenticated (Subscriber+) Stored Cross-Site Scripting via Multiple Checkbox and Multiple Select User Profile Fields ≤3.5.4.3Update to 3.5.4.4 | CVE-2025-14448 | |
| Medium5.3 | Unauthenticated Information Exposure via Unprotected Files ≤3.5.4.4Update to 3.5.4.5 | CVE-2025-12648 |
- Medium4.3Missing Authorization
≤3.5.7Update to 3.5.8
- Medium6.1Reflected Cross-Site Scripting
≤3.5.6Update to 3.5.7
- Medium6.5Authenticated (Contributor+) SQL Injection via 'order_by' Shortcode Attribute
≤3.5.5.1Update to 3.5.6
- Medium5.4Authenticated (Subscriber+) Stored Cross-Site Scripting via Multiple Checkbox and Multiple Select User Profile Fields
≤3.5.4.3Update to 3.5.4.4
- Medium5.3Unauthenticated Information Exposure via Unprotected Files
≤3.5.4.4Update to 3.5.4.5
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 medium, CVSS 6.4
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.
- EPSS
- Exploit Prediction Scoring System by FIRST.org.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.