CVE-2023-4719: The Simple Membership plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the `list_type` parameter in versions up to, and including, 4.3.5 due to insufficient input sanitization

high Affects simple-membership (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published 2023-09-06; advisory modified 2026-06-17.

The Simple Membership plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the `list_type` parameter in versions up to, and including, 4.3.5 due to insufficient input sanitization

Package: simple-membership (WordPress plugin) WordPress
Affected versions: <4.3.6
Fixed in: 4.3.6
Severity: high CVSS 7.2
Exploitation: not on CISA KEV · EPSS 1% (47.2th percentile)
Published: 2023-09-06
Source: nvd

References

CWE-79

NVD record simple-membership (WordPress plugin) advisories

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