Strategic Overview
- Status
- Patched in 2.3.7
- Affected Plugin
- One User Avatar | User Profile Picture
- Affected Version
< 2.3.7- CVSS
- 5.4Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-24672
At a glance
CVE-2021-24672 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the One User Avatar WordPress plugin, affecting versions < 2.3.7. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). The issue is fixed in version 2.3.7; sites on affected versions should update now. Disclosed September 2021, reported by apple502j.
Vulnerability Overview
The One User Avatar WordPress plugin before 2.3.7 does not escape the link and target attributes of its shortcode, allowing users with a role as low as Contributor to perform Stored Cross-Site Scripting attacks
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')
Reaching this weakness in One User Avatar < 2.3.7 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 One User Avatar the fix is 2.3.7: builds < 2.3.7 are affected, anything from 2.3.7 onward is not.
Remediation
Update to version 2.3.7, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to One User Avatar: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: One User Avatar 2.3.7 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in One User Avatar | User Profile Picture
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C