CVE-2026-43642 json
Softaculous Virtualizor PHP Object Injection via Billing Module Handler
published last mo. modified last mo. also EUVD-2026-84622
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Softaculous Virtualizor 3.0.0, 3.2.9 (Patch 9)
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- last mo.
Exploit prediction
0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- vulncheck.com https://www.vulncheck.com/blog/virtualizor-billing-hook-unauthenticated-root-rce referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.2 | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 9.2 | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- Softaculous Virtualizor
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
References
-
virtualizor.com
/blog/virtualizor-3-2-9-launched-release-candidate-patch-9/
release-notes, patch
-
virtualizor.com
/blog/virtualizor-3-3-0/
release-notes, patch
-
vulncheck.com
/blog/virtualizor-billing-hook-unauthenticated-root-rce
technical-description, exploit
-
vulncheck.com
/advisories/softaculous-virtualizor-php-object-injection-via-billing-module-handler
third-party-advisory
Sources
- CVE List CVE-2026-43642
- NVD CVE-2026-43642
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