Threat intelligence

Simple Membership <= 4.7.2 - Unauthenticated Stored Cross-Site Scripting

CVE-2026-42663 · simple-membership

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Simple Membership at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Simple Membership <= 4.7.2 - Unauthenticated Stored Cross-Site Scripting
Affected software: simple-membership(Plugin)
Affected versions: ≤ 4.7.2
Authentication: Unauthenticated
Vulnerability type: Cross-site scripting
CVE: CVE-2026-42663
Published: 3 May 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Source: Data imported from Wordfence Intelligence (advisory 25e145b5-719b-4b7c-aee2-343e8418bf08). Methodology and redistribution notes

Check whether your installed version is affected

SiteRespond Defence matches your installed Simple Membership version against this catalog when the Defence plugin is connected to your WordPress site.

Start SiteRespond Defence for WordPress — £29.99/monthScan your website

All Simple Membership advisoriesBack to catalog