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CVE-2026-40496

CRITICAL · CVSS 9.1 EPSS 0.04% Public Exploit

Source: NVD + CISA KEV + EPSS · Published: 2026-04-21 · Last synced: 2026-05-18

CyberRota Analysis

Detaylı analiz gerekiyor.

Public Exploit Signal

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

GitHub PoC Links
github.com ↗ github.com ↗ github.com ↗

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

CVE
CVE-2026-40496
Severity
CRITICAL
CVSS
9.1
EPSS
0.04%

Original NVD Description

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.213, attachment download tokens are generated using a weak and predictable formula: `md5(APP_KEY + attachment_id + size)`. Since attachment_id is sequential and size can be brute-forced in a small range, an unauthenticated attacker can forge valid tokens and download any private attachment without credentials. Version 1.8.213 fixes the issue.