{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-6249/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":8.8,"id":"CVE-2026-6249"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["critical"],"_cs_tags":["cve-2026-6249","rce","web-application"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eVvveb CMS version 1.0.8 is susceptible to a remote code execution (RCE) vulnerability (CVE-2026-6249) due to insufficient input validation in the media upload handler. An authenticated attacker can exploit this flaw by uploading a malicious PHP webshell disguised with a \u003ccode\u003e.phtml\u003c/code\u003e extension, which bypasses the server\u0026rsquo;s intended extension deny-list. The uploaded webshell is then accessible within the publicly available media directory. By crafting a specific HTTP request to access the uploaded \u003ccode\u003e.phtml\u003c/code\u003e file, the attacker can trigger the execution of arbitrary operating system commands on the server, leading to a complete compromise of the system. This vulnerability poses a significant threat to organizations utilizing Vvveb CMS 1.0.8, potentially enabling attackers to steal sensitive data, disrupt services, or establish a persistent foothold within the network.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker authenticates to the Vvveb CMS 1.0.8 instance.\u003c/li\u003e\n\u003cli\u003eThe attacker accesses the media upload functionality within the CMS.\u003c/li\u003e\n\u003cli\u003eThe attacker uploads a malicious PHP webshell file, named with a \u003ccode\u003e.phtml\u003c/code\u003e extension, crafted to execute operating system commands.\u003c/li\u003e\n\u003cli\u003eThe CMS stores the uploaded \u003ccode\u003e.phtml\u003c/code\u003e file in the publicly accessible media directory.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts an HTTP request targeting the uploaded \u003ccode\u003e.phtml\u003c/code\u003e file in the media directory.\u003c/li\u003e\n\u003cli\u003eThe web server executes the PHP code within the \u003ccode\u003e.phtml\u003c/code\u003e file upon receiving the attacker\u0026rsquo;s HTTP request.\u003c/li\u003e\n\u003cli\u003eThe PHP code executes arbitrary operating system commands, as defined by the attacker in the webshell.\u003c/li\u003e\n\u003cli\u003eThe attacker gains complete control of the server, potentially leading to data theft, service disruption, or persistent access.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-6249 allows an attacker to execute arbitrary operating system commands on the Vvveb CMS server. This could lead to a full compromise of the system, including the theft of sensitive data stored in the CMS database, modification of website content, or the deployment of malicious software. Organizations using Vvveb CMS 1.0.8 are at risk of data breaches, financial losses, and reputational damage if this vulnerability is exploited.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade Vvveb CMS to a patched version that addresses CVE-2026-6249.\u003c/li\u003e\n\u003cli\u003eImplement strict input validation and sanitization on all file upload functionalities to prevent the upload of malicious files.\u003c/li\u003e\n\u003cli\u003eConfigure the web server to prevent the execution of PHP code within the media directory.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u003ccode\u003eDetect Suspicious PHTML Request\u003c/code\u003e to identify attempts to access \u003ccode\u003e.phtml\u003c/code\u003e files in the media directory.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious HTTP requests targeting unusual file extensions in media directories.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-21T12:00:00Z","date_published":"2026-04-21T12:00:00Z","id":"/briefs/2026-04-vvveb-rce/","summary":"Vvveb CMS 1.0.8 is vulnerable to remote code execution, allowing authenticated attackers to upload a PHP webshell with a .phtml extension, bypass extension restrictions, and execute arbitrary operating system commands by requesting the uploaded file.","title":"Vvveb CMS 1.0.8 Remote Code Execution via Malicious Upload","url":"https://feed.craftedsignal.io/briefs/2026-04-vvveb-rce/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-6249","version":"https://jsonfeed.org/version/1.1"}