{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-5333/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[{"cvss":7.3,"id":"CVE-2026-5333"}],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["command-injection","web-application","cve-2026-5333"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eOn April 2, 2026, a command injection vulnerability, CVE-2026-5333, was disclosed in DefaultFuction Content-Management-System version 1.0. The vulnerability resides in the \u003ccode\u003e/admin/tools.php\u003c/code\u003e file and is triggered by manipulating the \u003ccode\u003ehost\u003c/code\u003e argument. This allows remote attackers to inject and execute arbitrary commands on the system. The existence of a public exploit increases the risk of exploitation, making it crucial for organizations using this CMS version to implement mitigation measures. The affected software has a limited user base, but successful exploitation can lead to 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 vulnerable DefaultFuction CMS 1.0 instance.\u003c/li\u003e\n\u003cli\u003eThe attacker sends a crafted HTTP request to \u003ccode\u003e/admin/tools.php\u003c/code\u003e, manipulating the \u003ccode\u003ehost\u003c/code\u003e parameter with an injected command.\u003c/li\u003e\n\u003cli\u003eThe application fails to properly sanitize or validate the \u003ccode\u003ehost\u003c/code\u003e parameter.\u003c/li\u003e\n\u003cli\u003eThe injected command is executed by the underlying operating system with the privileges of the web server.\u003c/li\u003e\n\u003cli\u003eThe attacker gains initial access to the server.\u003c/li\u003e\n\u003cli\u003eThe attacker may attempt to escalate privileges using publicly available exploits or misconfigurations.\u003c/li\u003e\n\u003cli\u003eThe attacker installs a web shell or other persistent access mechanism.\u003c/li\u003e\n\u003cli\u003eThe attacker performs reconnaissance on the internal network and exfiltrates sensitive data or causes other damage.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-5333 allows a remote attacker to execute arbitrary commands on the affected server. This can lead to complete compromise of the system, including sensitive data theft, modification of website content, and potential lateral movement within the network. Given the publicly available exploit, the risk of widespread exploitation is significant for unpatched DefaultFuction CMS 1.0 instances.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply any available patches or updates for DefaultFuction Content-Management-System 1.0 to address CVE-2026-5333.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u003ccode\u003eDetect Suspicious HTTP Request to admin/tools.php\u003c/code\u003e to detect exploitation attempts in web server logs.\u003c/li\u003e\n\u003cli\u003eMonitor web server logs for suspicious activity, especially requests containing shell commands in the \u003ccode\u003ehost\u003c/code\u003e parameter.\u003c/li\u003e\n\u003cli\u003eImplement input validation and sanitization measures to prevent command injection vulnerabilities in web applications.\u003c/li\u003e\n\u003cli\u003eRestrict access to the \u003ccode\u003e/admin/tools.php\u003c/code\u003e file to authorized users only.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-04-02T14:16:36Z","date_published":"2026-04-02T14:16:36Z","id":"/briefs/2026-04-defaultfunction-cms-command-injection/","summary":"DefaultFuction Content-Management-System 1.0 is vulnerable to command injection via manipulation of the 'host' argument in the /admin/tools.php file, allowing remote attackers to execute arbitrary commands.","title":"DefaultFuction CMS 1.0 Command Injection Vulnerability (CVE-2026-5333)","url":"https://feed.craftedsignal.io/briefs/2026-04-defaultfunction-cms-command-injection/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2026-5333","version":"https://jsonfeed.org/version/1.1"}