OCTOBER 7, 2026
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Case File

CVE-2026-66887

CRITICAL · CVSS 9.6 EPSS 0.33% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-15 · Last synced 2026-10-07

CyberRota Analysis

AI-Generated

The vulnerability arises from inadequate authorization on state-changing CGI scripts, coupled with the absence of session checks, potentially allowing unauthorized users to manipulate application states. This critical flaw could lead to severe impacts, including data breaches or unauthorized actions within the affected systems. Organizations utilizing CGI-based applications should prioritize remediation efforts to mitigate the risk of exploitation.

Public Exploit Signal

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

GitHub PoC Links
github.com ↗

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

CVE
CVE-2026-66887
Severity
CRITICAL
CVSS
9.6
EPSS
0.33%

Original NVD Description

The affected products are missing authorization on state-changing CGIs and session checks are not performed.