CVE-2023-4772

MEDIUM EPSS 34.9%
Published Sep 7, 20232y ago · Modified Jun 17, 20261w ago
5.4 CVSS 3.1
Medium
Find Similar
Published Sep 7, 2023 2y ago
Last Modified Jun 17, 2026 1w ago

Description

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.

CVSS Details

Base Score
5.4
Exploitability
2.3
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
34.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 1

VendorProductVersionRange
thenewsletterpluginnewsletter* ≤7.8.9

References 3

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/newsletter/tags/7.8.9/subscription/subscription.php#L1653
    Product
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/2955097/newsletter#file21
    Patch
  • wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/87da5300-1add-44fc-a3e0-e8912f946c84?source=cve
    PatchThird Party Advisory

Remediation

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/2955097/newsletter#file21
    Patch
  • wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/87da5300-1add-44fc-a3e0-e8912f946c84?source=cve
    PatchThird Party Advisory