QID 730942

Date Published: 2023-11-20

QID 730942: WordPress Plugin TinyMCE Custom Styles Stored Cross-Site Scripting (XSS) Vulnerability

Tutor LMS is a complete, feature-packed, and robust WordPress LMS plugin to easily create and sell courses online.

CVE-2023-2967: WordPress plugin TinyMCE Custom Styles versions before 1.1.4 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed

Affected Versions:
WordPress TinyMCE Custom Styles Plugin versions prior to 1.1.4

QID Detection Logic:
This unauthenticated detection checks for installed vulnerable version for TinyMCE Custom Styles Plugin using readme.txt.

Successful exploitation of this vulnerability may allow high privileged user to execute arbitrary JavaScript code on the target system.

  • CVSS V3 rated as Medium - 4.8 severity.
  • CVSS V2 rated as Medium - 5.5 severity.
    • Solution
    Customers are advised to upgrade to TinyMCE Custom Styles version 1.1.4 or later to remediate this vulnerability.
    Vendor References

    CVEs related to QID 730942

    CVE-2023-2967 |
    Software Advisories
    Advisory ID Software Component Link
    TinyMCE Custom Styles Plugin Release Notes URL Logo wordpress.org/plugins/tinymce-custom-styles/#developers
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