SEPTEMBER 18, 2026
Live Feed
Back to database
Case File

CVE-2026-18983

HIGH · CVSS 7.5 EPSS 0.50% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-28 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

The One User Avatar | User Profile Picture plugin for WordPress is vulnerable to Stored Cross-Site Scripting due to inadequate file type validation, allowing authenticated attackers with subscriber-level access to upload potentially executable files. This flaw could lead to remote code execution if administrators grant upload permissions to subscribers. WordPress site administrators using this plugin should prioritize patching to mitigate the risk of exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit remote code execution code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-18983
Severity
HIGH
CVSS
7.5
EPSS
0.50%
WordPress

Original NVD Description

The One User Avatar | User Profile Picture plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 2.5.4 via the wpua_action_process_option_update function. This is due to insufficient file type validation in wp_handle_upload() called without a MIME allow-list, with post-write validation relying on the attacker-controlled client-supplied Content-Type header rather than a server-derived type, and no cleanup of files that fail the check. This makes it possible for authenticated attackers, with subscriber-level access and above, to upload files that may be executable, which makes remote code execution possible. in order to exploit this vulnerability an admin has to give subscribers permission to upload avatars. While PHP files and svg files are rejected, dxfp files are accepted.