CVE-2026-43642 Softaculous Virtualizor PHP Object Injection via Billing Module Handler
Unauthenticated attackers can achieve remote code execution as root via PHP object injection in the billing module handler.
- 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-2026-43642?
CVE-2026-43642 is a critical unsafe deserialization 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 a PHP object injection vulnerability in the billing module handler that allows unauthenticated remote attackers to supply arbitrary serialized PHP objects for deserialization by setting the act parameter to login with the from_billing_module parameter present. Attackers can pass malicious serialized data through the billing_data POST field to the unserialize() function without allowed_classes restrictions, enabling exploitation of available POP chains to achieve remote code execution as root.
Weakness: CWE-502
Which versions are affected by CVE-2026-43642?
How do I fix CVE-2026-43642?
No fix has been published for CVE-2026-43642 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-43642 being exploited?
There is no known exploitation of CVE-2026-43642 in the wild and no public exploit code.
Sources
Also known as GHSA-gjf4-862p-rg96.