youForms for WordPress – Creating Forms for CopeCart <= 1.0.5 - Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 1.0.6
- Affected Plugin
- youForms for WordPress – Creating Forms for CopeCart
- Affected Version
<= 1.0.5- CVSS
- 5.5Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-24596
At a glance
CVE-2021-24596 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the youForms for WordPress WordPress plugin, affecting versions <= 1.0.5. It carries a CVSS score of 5.5 (reachable over the network; low attack complexity). The issue is fixed in version 1.0.6; sites on affected versions should update now. Disclosed July 2021, reported by xiahao.
Vulnerability Overview
The youForms for WordPress plugin through 1.0.5 does not sanitise escape the Button Text field of its Templates, allowing high privilege users (editors and admins) to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed
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 interaction from a victim user.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in youForms for WordPress <= 1.0.5 takes a caller who can reach the endpoint. 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 youForms for WordPress the fix is 1.0.6: builds <= 1.0.5 are affected, anything from 1.0.6 onward is not.
Remediation
Update to version 1.0.6, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to youForms for WordPress: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: youForms for WordPress 1.0.6 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