Medium severity · published Feb 18, 2026
CVE-2026-1304
Membership Plugin – Restrict Content <= 3.2.18 - Authenticated (Administrator+) Stored Cross-Site Scripting via Invoice Settings
4.4
CVSS
0.4%
EPSS
No
On KEV
Description
The Membership Plugin – Restrict Content for WordPress is vulnerable to Stored Cross-Site Scripting via multiple invoice settings fields in all versions up to, and including, 3.2.18 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
High
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MP
Membership Plugin – Restrict Content · stellarwp
through 3.2.18 · source: vendor
Affected product
MP
Membership Plugin – Restrict Content
stellarwp
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1304
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1304
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.16/core/includes/admin/settings/settings.php#L896
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.16/core/includes/admin/settings/settings.php#L905
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.16/core/includes/admin/settings/settings.php#L914
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.16/core/includes/admin/settings/settings.php#L923
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.16/core/includes/admin/settings/settings.php#L932
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.16/core/includes/admin/settings/settings.php#L941
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