CVE-2026-15931

Simple Membership < 4.7.8 - Unauthenticated Stored XSS via PayPal Subscription Subscriber Name

Published Aug 3, 2026 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Description
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 unauthenticated attackers to store arbitrary JavaScript that executes in an administrator's session.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Simple-membership-plugin
Simple-membership-plugin simple Membership
Wordpress
Wordpress wordpress
Vendors & Products Simple-membership-plugin
Simple-membership-plugin simple Membership
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Weaknesses CWE-79
Type Values Removed Values Added
Description 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 unauthenticated attackers to store arbitrary JavaScript that executes in an administrator's session.
Title Simple Membership < 4.7.8 - Unauthenticated Stored XSS via PayPal Subscription Subscriber Name
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Aug 3, 2026, 5:06 PM
Reserved
Jul 16, 2026, 7:28 AM
Status
Deferred
Published
Aug 3, 2026, 7:16 AM
Modified
Aug 26, 2026, 4:31 PM