SEPTEMBER 15, 2026
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Case File

CVE-2026-87930

HIGH · CVSS 8.1 EPSS 0.34% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-09 · Last synced 2026-09-15

CyberRota Analysis

AI-Generated

MaxSite CMS versions up to 109.6 are vulnerable due to improper handling of the ci_session cookie, allowing unauthenticated attackers to exploit the unserialize() function without class restrictions. This vulnerability enables the injection of PHP objects, potentially leading to code execution or corruption of the application state if exploitable gadget classes are present. Organizations using MaxSite CMS should prioritize patching this vulnerability to mitigate the risk of unauthorized access and system compromise.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
code execution
GitHub PoC Links
github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗ github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-87930
Severity
HIGH
CVSS
8.1
EPSS
0.34%

Original NVD 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.