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CVE-2026-18983— One User Avatar | User Profile Picture <= 2.5.4 - Authenticated (Subscriber+) Stored Cross-Site Scripting via wpua-file Parameter

Quick assessment

Affected
onedesigns One User Avatar | User Profile Picture
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 的“One User Avatar

CVSS 7.5 · High EPSS 0.50% · P41

Affected Version Matrix 1

VendorProduct Version RangeStatus
onedesigns One User Avatar | User Profile Picture ≤ 2.5.4 affected
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I. Basic Information for CVE-2026-18983

Vulnerability Information
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Vulnerability Title
One User Avatar | User Profile Picture <= 2.5.4 - Authenticated (Subscriber+) Stored Cross-Site Scripting via wpua-file Parameter
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
onedesigns One User Avatar | User Profile Picture 0 ~ 2.5.4 -

II. Public POCs for CVE-2026-18983

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III. Intelligence Information for CVE-2026-18983

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Patches & Fixes for CVE-2026-18983 (3)

Security Blog Posts for CVE-2026-18983 (1)

Vendor Pages for CVE-2026-18983 (2)

IV. Related Vulnerabilities

Same product: One User Avatar | User Profile Picture
Same weakness: CWE-434

V. Comments for CVE-2026-18983

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