CVE-2026-18933— wp-downloadmanager - Unrestricted File Upload via Missing Extension/MIME Validation and Path Traversal
Quick assessment
Affected
wp-downloadmanager wp-downloadmanager
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 WP-DownloadManager是WordPress基金会的一款下载管理插件。 WordPress WP-DownloadManager 1.68.11版本和6.9.4版本存在任意文件上传漏洞，该漏洞源于文件上传处理中对文件扩展名和MIME类型验证不足，且目标路径拼接未净化的输入，导致具有管理员权限的攻击者可通过download-add.php上传任意文件并直接执行，从而导致远程代码执行。
Possible ATT&CK Techniques 3 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing Application T1505.003 · Web ShellAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| wp-downloadmanager | wp-downloadmanager | ≤ 1.69 |
affected |
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I. Basic Information for CVE-2026-18933
Vulnerability Information
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Vulnerability Title
wp-downloadmanager - Unrestricted File Upload via Missing Extension/MIME Validation and Path Traversal
Source: CVE Program / CVE List V5
Vulnerability Description
The wp-downloadmanager WordPress plugin, in version 1.68.11 (also affecting the 6.9.4 release line), allows an admin-privileged user (current_user_can('manage_downloads')) to upload arbitrary files via download-add.php with no extension or MIME-type validation of any kind - no wp_check_filetype_and_ext, no validate_file, and no extension blocklist exist anywhere in the upload handler.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/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
Vulnerability Title
WordPress WP-DownloadManager 任意文件上传漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress WP-DownloadManager是WordPress基金会的一款下载管理插件。 WordPress WP-DownloadManager 1.68.11版本和6.9.4版本存在任意文件上传漏洞，该漏洞源于文件上传处理中对文件扩展名和MIME类型验证不足，且目标路径拼接未净化的输入，导致具有管理员权限的攻击者可通过download-add.php上传任意文件并直接执行，从而导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| wp-downloadmanager | wp-downloadmanager | 0 ~ 1.69 | - |
|
II. Public POCs for CVE-2026-18933
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Vendor Pages for CVE-2026-18933 (1)
IV. Related Vulnerabilities
Same product: wp-downloadmanager
-
CVE-2026-2426
WP-DownloadManager <= 1.69 - Authenticated (Administrator+) -
CVE-2026-2419
WP-DownloadManager <= 1.69 - Authenticated (Administrator+) -
CVE-2025-10747
WP-DownloadManager <= 1.68.11 - Authenticated (Admin+) Arbit -
CVE-2025-4799
WP-DownloadManager <= 1.68.10 - Authenticated (Administrator -
CVE-2025-4798
WP-DownloadManager <= 1.68.10 - Authenticated (Administrator
Same weakness: CWE-434
-
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CVE-2026-92820
Ninja Forms - File Uploads <= 3.3.34 - Unauthenticated Arbit -
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Unrestricted File Upload Leading to Remote Code Execution in
V. Comments for CVE-2026-18933
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