What is CVE-2026-15931?

CVE-2026-15931 is a medium-severity vulnerability in Simple Membership, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-08-03.

How severe is CVE-2026-15931?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Simple Membership

CVE-2026-15931

The Simple Membership WordPress plugin before 4.7.8 does not sanitise a subscriber name value received from an unauthenticated payment approval request, nor escape it when displaying it in the administration dashboard, allowing unauthentic…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Unknown Simple Membership — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-15931?: CVE-2026-15931 is a medium-severity vulnerability in Simple Membership, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-08-03.
How severe is CVE-2026-15931?: Medium severity. CVSS v3 base score is 6.1 out of 10.