{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/laravel-mediable/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["laravel-mediable"],"_cs_severities":["critical"],"_cs_tags":["laravel-mediable","file-upload","rce","CVE-2026-4809"],"_cs_type":"advisory","_cs_vendors":["plank"],"content_html":"\u003cp\u003eplank/laravel-mediable, a package for Laravel applications, is vulnerable to arbitrary file upload. Specifically, versions through 6.4.0 are susceptible to CVE-2026-4809, which allows a remote attacker to upload malicious files by manipulating the MIME type during the upload process. This occurs when the application trusts client-supplied MIME types. An attacker can upload a file containing PHP code disguised as an image file. Due to the lack of proper server-side validation, this can bypass upload restrictions. The vulnerability was reported in March 2026, and at the time of the NVD publication, no patch was available, and the vendor had not responded to disclosure attempts. This poses a significant risk to applications using the vulnerable package, potentially leading to remote code execution and complete system compromise.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker identifies a Laravel application using a vulnerable version (\u0026lt;= 6.4.0) of the plank/laravel-mediable package.\u003c/li\u003e\n\u003cli\u003eThe attacker locates a file upload function within the application that utilizes the mediable package.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious PHP file containing code intended for remote code execution.\u003c/li\u003e\n\u003cli\u003eThe attacker sets the MIME type of the malicious file to a benign image type (e.g., image/jpeg, image/png) in the HTTP request headers.\u003c/li\u003e\n\u003cli\u003eThe attacker uploads the crafted file to the vulnerable endpoint.\u003c/li\u003e\n\u003cli\u003eThe application, trusting the client-supplied MIME type, stores the file without proper validation.\u003c/li\u003e\n\u003cli\u003eThe attacker determines the storage location of the uploaded file (e.g., through directory traversal or other means).\u003c/li\u003e\n\u003cli\u003eThe attacker accesses the uploaded PHP file via a web browser, triggering the execution of the malicious code, leading to remote code execution on the server.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eA successful exploit of CVE-2026-4809 can lead to arbitrary file upload and remote code execution. This allows an attacker to gain complete control of the affected web server, potentially leading to data breaches, defacement of the website, or further attacks on internal systems. While specific victim counts are unavailable, any application using the vulnerable plank/laravel-mediable package is at risk. The vulnerability poses a critical threat to organizations relying on the affected applications, as it can result in significant financial and reputational damage.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMonitor web server logs for suspicious file uploads with image MIME types but PHP file extensions. Deploy the \u0026quot;Detect Suspicious PHP File Upload with Image MIME Type\u0026quot; Sigma rule to identify such attempts based on webserver logs.\u003c/li\u003e\n\u003cli\u003eImplement server-side MIME type validation to ensure uploaded files match their declared MIME type.\u003c/li\u003e\n\u003cli\u003eRestrict file uploads to non-executable directories. Configure web servers to prevent execution of PHP code in upload directories.\u003c/li\u003e\n\u003cli\u003eUpgrade to a patched version of plank/laravel-mediable as soon as one becomes available. Check the vendor's website or the package repository for updates.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-24T12:00:00Z","date_published":"2024-01-24T12:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-laravel-mediable-rce/","summary":"plank/laravel-mediable through version 6.4.0 is vulnerable to arbitrary file upload via client-supplied MIME types, potentially leading to remote code execution if the uploaded file is stored in a web-accessible location.","title":"Laravel Mediable Arbitrary File Upload Vulnerability (CVE-2026-4809)","url":"https://feed.craftedsignal.io/briefs/2024-01-laravel-mediable-rce/"}],"language":"en","title":"CraftedSignal Threat Feed - Laravel-Mediable","version":"https://jsonfeed.org/version/1.1"}