CVE-2026-43641 Softaculous Virtualizor OS Command Injection via Billing Module Handler
Unauthenticated attackers can execute arbitrary root commands via OS command injection in the billing module, compromising the host and managed VPS instances.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-43641?
CVE-2026-43641 is a critical command injection vulnerability in Softaculous Virtualizor, published on 22 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Softaculous Virtualizor before 3.2.9 (Patch 9) and 3.0.0 contains an OS command injection vulnerability in the billing module handler that allows unauthenticated remote attackers to execute arbitrary commands as root by bypassing authentication through specific parameter combinations. Attackers can deserialize a crafted billing_data POST field and inject shell payloads through the uid field, which is passed unmodified to proc_open() via vexec(), yielding complete control of the host and all managed VPS instances.
Weakness: CWE-78
Which versions are affected by CVE-2026-43641?
How do I fix CVE-2026-43641?
No fix has been published for CVE-2026-43641 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-43641 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-43641 exists.
Sources
Also known as GHSA-x23m-fhhv-vj5x.