Mail Subscribe List <= 2.1.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via smlsubform shortcode

6.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2023-23657
CVSS 6.4 (Medium)
Publicly Published April 20, 2023
Last Updated August 8, 2023
Researcher István Márton - Wordfence

Description

The Mail Subscribe List plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘smlsubform’ shortcode in versions up to, and including, 2.1.9 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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Vulnerability Details for Mail Subscribe List

Software Type Plugin
Software Slug mail-subscribe-list (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.1.10, or a newer patched version
Affected Version
  • <= 2.1.9
Patched Version
  • 2.1.10

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