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Advisories

MaxSite CMS through 109.6 PHP Object Injection via ci_session

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severity
critical
date
Affecting

  • MaxSite CMS >= 0.78, <= 109.6

CWE
  • CWE-502 Deserialization of Untrusted Data
CVSS
9.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
EVIL0RD
Description
MaxSite CMS through 109.6 passes the ci_session cookie to unserialize() without class restrictions, allowing unauthenticated attackers to inject PHP objects. Attackers can forge valid session cookies using the hardcoded encryption key to trigger magic methods and corrupt application state or achieve code execution if gadget classes exist.

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