CVE-2024-13504

Shared Files – Frontend File Upload Form & Secure File Sharing <= 1.7.42 - Limited Unauthenticated Stored Cross-Site Scripting via File Upload

2025-01-30 17:22
Tim Coen

Strategic Overview

Status
Patched in 1.7.43
Affected Plugin
Shared Files – File Upload & Download Manager
Affected Version
<= 1.7.42
CVSS
7.2High
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2024-13504
View all Shared Files – File Upload & Download Manager vulnerabilities

At a glance

CVE-2024-13504 is a high-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Shared Files WordPress plugin, affecting versions <= 1.7.42. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.7.43; sites on affected versions should update now. Disclosed January 2025, reported by Tim Coen.

Vulnerability Overview

The Shared Files – Frontend File Upload Form & Secure File Sharing plugin for WordPress is vulnerable to Stored Cross-Site Scripting via dfxp File uploads in all versions up to, and including, 1.7.42 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses the dfxp file. This issue affects only Apache-based environments, where dfxp files are handled by default.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in Shared Files <= 1.7.42 takes no account at all. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Shared Files the fix is 1.7.43: builds <= 1.7.42 are affected, anything from 1.7.43 onward is not.

Remediation

Update to version 1.7.43, or a newer patched version

How does WordSec protect against this?

Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Shared Files 1.7.43 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-13504https://www.wordfence.com/threat-intel/vulnerabilities/id/9f4210a0-5448-4ff6-876a-37db4ad9b23ahttps://nvd.nist.gov/vuln/detail/CVE-2024-13504

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C