{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","favicon":"https://feed.craftedsignal.io/favicon-32x32.png","feed_url":"https://feed.craftedsignal.io/cpes/cpe2.3asoftaculousvirtualizor/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":[],"_cs_cpes":["cpe:2.3:a:softaculous:virtualizor:*:*:*:*:*:*:*:*"],"_cs_cves":[{"cvss":9.8,"id":"CVE-2026-43641"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Virtualizor (\u003c 3.2.9 (Patch 9))"],"_cs_severities":["critical"],"_cs_tags":[],"_cs_type":"advisory","_cs_vendors":["Softaculous"],"content_html":"\u003cp\u003eSoftaculous Virtualizor versions prior to 3.2.9 (Patch 9) contain a critical OS command injection vulnerability, tracked as CVE-2026-43641. The vulnerability resides within the application's billing module handler. An unauthenticated remote attacker can bypass existing authentication mechanisms by providing specific, maliciously crafted parameter combinations within a serialized 'billing_data' POST request.\u003c/p\u003e\n\u003cp\u003eThe injection occurs when the 'uid' field, contained within the deserialized billing data, is passed without adequate sanitization to the application's 'vexec()' function, which subsequently invokes 'proc_open()'. Because the application runs with administrative privileges, successful exploitation grants the attacker root access to the underlying Virtualizor host. This level of access provides complete control over the host server and all virtual private server (VPS) instances managed by the compromised Virtualizor platform. Given the ease of access and the critical severity, organizations using affected versions should prioritize immediate patching.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker targets an internet-facing Virtualizor instance running a vulnerable version (\u0026lt; 3.2.9).\u003c/li\u003e\n\u003cli\u003eThe attacker crafts a malicious HTTP POST request containing a serialized 'billing_data' payload.\u003c/li\u003e\n\u003cli\u003eThe payload includes a specially crafted 'uid' parameter containing shell command metacharacters.\u003c/li\u003e\n\u003cli\u003eThe Virtualizor billing module deserializes the malicious 'billing_data' input.\u003c/li\u003e\n\u003cli\u003eThe application passes the unsanitized 'uid' parameter to the 'vexec()' helper function.\u003c/li\u003e\n\u003cli\u003eThe 'vexec()' function passes the input to 'proc_open()', triggering command execution.\u003c/li\u003e\n\u003cli\u003eThe system executes the injected commands as the root user.\u003c/li\u003e\n\u003cli\u003eThe attacker gains full control over the host and all managed VPS environments.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-43641 results in total system compromise. An attacker gains root access to the Virtualizor host, enabling them to exfiltrate data, install persistent backdoors, or destroy managed VPS instances. The impact is significant for service providers, as a single compromised Virtualizor host can lead to the widespread breach of multiple downstream client environments hosted on the platform.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cp\u003ePrioritize the immediate application of the vendor-supplied security update to patch CVE-2026-43641. Upgrade all Virtualizor instances to version 3.2.9 (Patch 9) or later. Configure perimeter firewalls or web application firewalls to inspect and drop incoming POST requests to the billing module that contain unexpected serialized data or suspicious shell-related characters in the 'uid' field. Monitor web server access logs for anomalous POST requests directed at billing endpoints that correlate with the vulnerability patterns identified in this brief.\u003c/p\u003e\n","date_modified":"2026-09-22T18:38:00Z","date_published":"2026-09-22T18:38:00Z","id":"https://feed.craftedsignal.io/briefs/2026-09-virtualizor-rce/","summary":"CVE-2026-43641 is an OS command injection vulnerability in the Virtualizor billing module that allows unauthenticated remote attackers to achieve root-level code execution via serialized billing data.","title":"Unauthenticated Remote Command Execution in Softaculous Virtualizor","url":"https://feed.craftedsignal.io/briefs/2026-09-virtualizor-rce/"}],"language":"en","title":"CraftedSignal Threat Feed - Cpe:2.3:a:softaculous:virtualizor:*:*:*:*:*:*:*:*","version":"https://jsonfeed.org/version/1.1"}