{"id":87226,"date":"2026-07-18T13:00:36","date_gmt":"2026-07-18T13:00:36","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T00:00:00","slug":"cve-2025-3566-unrestricted-file-upload-vulnerability-in-veal98-iao-iu-ou-echo-ai-uan-he-u-i-ong","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-3566-unrestricted-file-upload-vulnerability-in-veal98-iao-iu-ou-echo-ai-uan-he-u-i-ong\/","title":{"rendered":"CVE-2025-3566: Unrestricted File Upload Vulnerability in veal98 \u5c0f\u725b\u8089 Echo \u5f00\u6e90\u793e\u533a\u7cfb\u7edf<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

CVE-2025-3566 is a critical vulnerability in veal98 \u5c0f\u725b\u8089 Echo \u5f00\u6e90\u793e\u533a\u7cfb\u7edf version 4.2. This vulnerability allows remote attackers to upload unrestricted files, potentially leading to system compromise or data leakage.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-3566
\nSeverity: Critical (7.3 CVSS Score)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise and potential data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

veal98 \u5c0f\u725b\u8089 Echo \u5f00\u6e90\u793e\u533a\u7cfb\u7edf | 4.2<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability resides in the function uploadMdPic of the file \/discuss\/uploadMdPic. The manipulation of the argument ‘editormd-image-file’ allows for unrestricted file upload. Since the system does not properly validate or sanitize the uploaded files, an attacker could upload a malicious file to the server.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Here’s a conceptual example of how an attacker might exploit this vulnerability:<\/p>\n

POST \/discuss\/uploadMdPic HTTP\/1.1\nHost: target.example.com\nContent-Type: multipart\/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW\n------WebKitFormBoundary7MA4YWxkTrZu0gW\nContent-Disposition: form-data; name=\"editormd-image-file\"; filename=\"malicious_script.php\"\nContent-Type: application\/x-php\n\n------WebKitFormBoundary7MA4YWxkTrZu0gW--<\/code><\/pre>\n
In this example, an attacker sends a POST request to the vulnerable endpoint with a malicious PHP script. Once uploaded, this script could allow the attacker to execute arbitrary system commands.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview CVE-2025-3566 is a critical vulnerability in veal98 \u5c0f\u725b\u8089 Echo \u5f00\u6e90\u793e\u533a\u7cfb\u7edf version 4.2. This vulnerability allows remote attackers to upload unrestricted files, potentially leading to system compromise or data leakage. Vulnerability Summary CVE ID: CVE-2025-3566 Severity: Critical (7.3 CVSS Score) Attack Vector: Network Privileges Required: None User Interaction: None Impact: System compromise and potential data […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-87226","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t