CVE-2026-40496

Katalog CVE

CVSS 9.1 · Critical EPSS 0,55%

Kerentanan Use of Insufficiently Random Values pada freescout. Skor CVSS 3.1 9.1 (Critical) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

21 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

9.1 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-330: Use of Insufficiently Random Values
CWE-340: Generation of Predictable Numbers or Identifiers

EPSS (30 hari)

0,55% peluang dieksploitasi; lebih tinggi dari 44,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/freescout-help-desk/freescout/security/advisories/GHSA-2783-wxmm-wmwr exploit · advisory vendor
• https://github.com/freescout-help-desk/freescout/commit/dbdf8f2260b43a21818255c70f0b61b9de9cd555 patch
• https://github.com/freescout-help-desk/freescout/releases/tag/1.8.213 release notes