CVE-2021-24549: 
WordPress vulnerability analysis and mitigation

The AceIDE WordPress plugin versions 2.6.2 and below contain an authenticated arbitrary file access vulnerability (CVE-2021-24549). The vulnerability was discovered by Shreya Pohekar of Codevigilant and publicly disclosed on July 24, 2021. This security issue affects the file access functionality of the plugin, allowing authenticated administrators to access files outside of the intended WordPress directory (WPScan, CodeVigilant).

The vulnerability exists because the plugin does not properly sanitize or validate user input that is appended to system paths before using it in various actions. Specifically, in the FileOps.php file on line 58, the plugin takes a POST parameter 'filename' that is passed directly to the get_contents method without proper validation, enabling directory traversal attacks. The vulnerability has been assigned a CVSS score of 6.8 (medium) and is classified as a Path Traversal (CWE-22) vulnerability (WPScan, CodeVigilant).

The vulnerability allows high-privilege users such as administrators to access any file on the web server outside of the blog directory through a path traversal attack. This could potentially expose sensitive system files, such as /etc/passwd, and other critical server information (CodeVigilant).

There is no known fix available for this vulnerability as the plugin has been closed since June 1, 2021. Users are advised to consider removing the plugin or finding alternative solutions (CodeVigilant).