6.4
Medium
CVE-2026-103427 The Simple Membership plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'country' parameter in…
Description
The Simple Membership plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'country' parameter in all versions up to, and including, 4.8.4 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. Unauthenticated attackers may also exploit this vulnerability when the plugin's Enable Free Membership feature is turned on, as it permits anonymous front-end registration and profile submission.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Simple Membership 4.8 | earliest → 4.8.4 | No fix stated |
Other CVEs of Simple Membership
The 11 CVEs of Simple Membership →
CVE-2026-97337
The Simple Membership plugin for WordPress is vulnerable to unauthorized modification of data and sensitive…
7.5
High
CVE-2026-77194
The Simple Membership plugin for WordPress is vulnerable to Authentication Bypass leading to Administrator Account…
5.3
Medium
CVE-2026-12093
The Simple Membership plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including,…
5.3
Medium
CVE-2026-1461
The Simple Membership plugin for WordPress is vulnerable to Improper Handling of Missing Values in all versions up to,…
6.5
Medium