CVE-2026-43642Softaculous Virtualizor PHP Object Injection via Billing Module Handler
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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.
- CVSS
- 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-502
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Softaculous Virtualizor softaculous:virtualizor (from the name) | before 3.2.9 (Patch 9); 3.0.0 not affected | CNA record |
References
- https://www.vulncheck.com/blog/virtualizor-billing-hook-unauthenticated-root-rcetechnical-description, exploit
- https://www.virtualizor.com/blog/virtualizor-3-2-9-launched-release-candidate-patch-9/release-notes, patch
- https://www.virtualizor.com/blog/virtualizor-3-3-0/release-notes, patch
- https://www.vulncheck.com/advisories/softaculous-virtualizor-php-object-injection-via-billing-module-handlerthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.