{"id":59403,"date":"2025-07-15T16:17:26","date_gmt":"2025-07-15T16:17:26","guid":{"rendered":""},"modified":"2025-08-31T06:32:36","modified_gmt":"2025-08-31T12:32:36","slug":"cve-2025-4828-arbitrary-file-deletion-vulnerability-in-support-board-plugin-for-wordpress","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-4828-arbitrary-file-deletion-vulnerability-in-support-board-plugin-for-wordpress\/","title":{"rendered":"CVE-2025-4828: Arbitrary File Deletion Vulnerability in Support Board Plugin for WordPress<\/strong>"},"content":{"rendered":"

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

In this post, we’re going to discuss a critical vulnerability found in the Support Board plugin for WordPress, identified as CVE-2025-4828. This security flaw allows an attacker to delete arbitrary files on the server due to insufficient file path validation. The vulnerability affects all versions up to and including 3.8.0 of the plugin<\/a>. Given WordPress’s widespread use, this vulnerability could have a significant impact on a vast array of websites, potentially leading to system<\/a> compromise or data leakage.<\/p>\n

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

CVE ID: CVE-2025-4828
\nSeverity: Critical (9.8)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system compromise or data<\/a> leakage<\/p>\n

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

Product | Affected Versions<\/p>\n

Support Board Plugin for WordPress<\/a> | Up to and including 3.8.0<\/p>\n

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

The vulnerability<\/a> resides in the sb_file_delete function where there is insufficient file path validation. This allows an attacker to send a specially crafted request to delete arbitrary files<\/a> on the server, such as the wp-config.php file. The deletion of this file can lead to remote code execution<\/a>. Furthermore, an attacker can exploit this vulnerability unauthenticated<\/a>, leveraging the CVE-2025-4855 vulnerability.<\/p>\n

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

Below is a conceptual example of a malicious HTTP request that could exploit this vulnerability<\/a>:<\/p>\n

POST \/sb_file_delete HTTP\/1.1\nHost: victimwebsite.com\nContent-Type: application\/x-www-form-urlencoded\nfile_path=..\/wp-config.php<\/code><\/pre>\n
In this example, an attacker sends a POST request to the sb_file_delete endpoint, specifying the relative path to the wp-config.php file<\/a> in the ‘file_path’ parameter. This could result in the deletion of the wp-config.php file, leading to potential remote code<\/a> execution.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
Users can apply a patch provided by the vendor to fix this vulnerability. In the absence of a patch, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used to temporarily mitigate the risk. These systems should be configured to detect and block attempts to exploit this vulnerability<\/a>, such as requests to the sb_file_delete endpoint with a suspicious ‘file_path’ parameter.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview In this post, we’re going to discuss a critical vulnerability found in the Support Board plugin for WordPress, identified as CVE-2025-4828. This security flaw allows an attacker to delete arbitrary files on the server due to insufficient file path validation. The vulnerability affects all versions up to and including 3.8.0 of the plugin. Given […]<\/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":[80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-59403","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-rce"],"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