{"id":64354,"date":"2025-08-27T13:39:19","date_gmt":"2025-08-27T13:39:19","guid":{"rendered":""},"modified":"2025-09-16T12:32:17","modified_gmt":"2025-09-16T18:32:17","slug":"cve-2025-53251-unrestricted-file-upload-vulnerability-in-an-themes-pin-wp","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-53251-unrestricted-file-upload-vulnerability-in-an-themes-pin-wp\/","title":{"rendered":"CVE-2025-53251: Unrestricted File Upload Vulnerability in An-Themes Pin WP<\/strong>"},"content":{"rendered":"

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

The cybersecurity community has recently identified a critical vulnerability, CVE-2025-53251, affecting the An-Themes Pin WP theme. This vulnerability allows unrestricted upload of files with dangerous types, enabling potential attackers to upload a web shell to a web server. The severity of this vulnerability lies in its potential to lead<\/a> to system compromise or significant data leakage. Therefore, it is crucial to understand its workings, potential impacts, and mitigation strategies for all users of Pin WP theme<\/a> versions before 7.2.<\/p>\n

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

CVE ID: CVE-2025-53251
\nSeverity: Critical (CVSS: 9.9)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: System compromise, data leakage<\/a><\/p>\n

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

Product | Affected Versions<\/p>\n

An-Themes Pin WP | Before 7.2<\/p>\n

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

The exploit takes advantage of the unrestricted file upload vulnerability<\/a> in the An-Themes Pin WP theme. Attackers can upload a harmful file<\/a>, such as a web shell, to the server. A web shell is a script that can be uploaded<\/a> to a web server to enable remote administration of the machine. This gives the attacker the ability to execute arbitrary<\/a> commands and steal data, or use the server to launch attacks on other targets.<\/p>\n

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

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

POST \/wp-content\/themes\/pin-wp\/upload.php HTTP\/1.1\nHost: target.example.com\nContent-Type: multipart\/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW\n------WebKitFormBoundary7MA4YWxkTrZu0gW\nContent-Disposition: form-data; name=\"file\"; filename=\"shell.php\"\nContent-Type: application\/x-php\n\n------WebKitFormBoundary7MA4YWxkTrZu0gW--<\/code><\/pre>\n
In this example, the attacker is uploading a PHP shell script named “shell.php” that allows them to execute arbitrary<\/a> system commands.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
Users affected by this vulnerability are strongly advised to update to the latest version<\/a> of An-Themes Pin WP theme as soon as possible. If immediate patching is not feasible, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can provide temporary mitigation. These tools can detect and block attempts to exploit this vulnerability<\/a>. However, they should not be considered a long-term solution as they do not remove the underlying vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The cybersecurity community has recently identified a critical vulnerability, CVE-2025-53251, affecting the An-Themes Pin WP theme. This vulnerability allows unrestricted upload of files with dangerous types, enabling potential attackers to upload a web shell to a web server. The severity of this vulnerability lies in its potential to lead to system compromise or significant […]<\/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":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-64354","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"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