CVE-2023-4772
Newsletter <= 7.8.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
The Newsletter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'newsletter_form' shortcode in versions up to, and including, 7.8.9 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
| CWE | CWE-79 |
| Vendor | satollo |
| Product | newsletter – send awesome emails from wordpress |
| Published | Sep 7, 2023 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
satollo / Newsletter – Send awesome emails from WordPress
0 ≤ 7.8.9
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/87da5300-1add-44fc-a3e0-e8912f946c84?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/newsletter/tags/7.8.9/subscription/subscription.php#L1653 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/2955097/newsletter#file21
Credits
István Márton