What is CVE-2026-1304?

CVE-2026-1304 is a medium-severity vulnerability in Stellarwp Membership Plugin – Restrict Content, classified under Cross-site Scripting. CVSS score: 4.4/10. Published 2026-02-18.

How severe is CVE-2026-1304?

Medium severity. CVSS v3 base score is 4.4 out of 10.

XSS in Stellarwp Membership Plugin – Restrict Content

CVE-2026-1304

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (23.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N.

Affected products

Stellarwp Membership Plugin – Restrict Content — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-1304?: CVE-2026-1304 is a medium-severity vulnerability in Stellarwp Membership Plugin – Restrict Content, classified under Cross-site Scripting. CVSS score: 4.4/10. Published 2026-02-18.
How severe is CVE-2026-1304?: Medium severity. CVSS v3 base score is 4.4 out of 10.