Enhanced Media Library <= 2.8.9 - Authenticated (Author+) Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 2.8.10
- Affected Plugin
- Enhanced Media Library
- Affected Version
<= 2.8.9- CVSS
- 5.4Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2024-2840
At a glance
CVE-2024-2840 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Enhanced Media Library WordPress plugin, affecting versions <= 2.8.9. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Author level or above. The issue is fixed in version 2.8.10; sites on affected versions should update now. Disclosed April 2024, reported by Tim Coen.
Vulnerability Overview
The Enhanced Media Library plugin for WordPress is vulnerable to Stored Cross-Site Scripting via media upload functionality in all versions up to, and including, 2.8.9 due to the plugin allowing 'dfxp' files to be uploaded. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Enhanced Media Library <= 2.8.9 carries this weakness at dfxp, and reaching it takes an account at Author level or above. 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 Enhanced Media Library the fix is 2.8.10: builds <= 2.8.9 are affected, anything from 2.8.10 onward is not.
Remediation
Update to version 2.8.10, or a newer patched version
How does WordSec protect against this?
An attacker needs Author access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Enhanced Media Library 2.8.10 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C