CVE-2021-24450
CWE-79Published: August 2, 2021· Updated: Jun 17, 2026
Official Description
The User Registration, User Profiles, Login & Membership – ProfilePress (Formerly WP User Avatar) WordPress plugin before 3.1.8 did not sanitise or escape some of its settings before saving them and outputting them back in the page, allowing high privilege users such as admin to set JavaScript payloads in them even when the unfiltered_html capability is disallowed, leading to an authenticated Stored Cross-Site Scripting issue
Technical Analysis
CVE-2021-24450 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.
From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-79)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-24450 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts