QID 730415

Date Published: 2022-03-31

QID 730415: Textpattern CMS Cross-Site Scripting (XSS) Vulnerability

Textpattern is a free and open-source content management system for PHP and MySQL. According to builtwith.com it was publicly in use on over two-thousand websites.

Textpattern 4.8.7 is vulnerable to Cross Site Scripting (XSS) via /textpattern/index.php. A remote and unauthenticated attacker can use XSS to trigger remote code execution by uploading a webshell. To do so they must first steal the CSRF token before submitting a file upload request.

Affected Versions:
Textpattern version 4.8.7

QID Detection Logic (Unauthenticated):
This QID checks for vulnerable version of Textpattern CMS by sending a GET request to /index.php?atom=1 and /textpattern/textpattern.js endpoint

Successful exploitation of the vulnerability may allow arbitrary Remote Code Execution.

  • CVSS V3 rated as Critical - 8.3 severity.
  • CVSS V2 rated as Medium - 5.1 severity.
    • Solution

    Customers are advised to upgrade to Textpattern 4.8.8 or later. For more info please refer to TextArea Security Advisory

    Vendor References

    CVEs related to QID 730415

    CVE-2021-44082 |
    Software Advisories
    Advisory ID Software Component Link
    NA URL Logo textpattern.com/weblog/textpattern-488-released-php-81-support-security-fix-and-more
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