CVE-2026-40496
| Summary |
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.
|
| Publication Date |
April 21, 2026, 11:16 a.m. |
| Registration Date |
April 25, 2026, 4:02 a.m. |
| Last Update |
April 24, 2026, 1:32 a.m. |
|
CVSS3.1 : CRITICAL
|
| スコア |
9.1
|
| Vector |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
| 攻撃元区分(AV) |
ネットワーク |
| 攻撃条件の複雑さ(AC) |
低 |
| 攻撃に必要な特権レベル(PR) |
不要 |
| 利用者の関与(UI) |
不要 |
| 影響の想定範囲(S) |
変更なし |
| 機密性への影響(C) |
高 |
| 完全性への影響(I) |
高 |
| 可用性への影響(A) |
なし |
Affected software configurations
| Configuration1 |
or higher |
or less |
more than |
less than |
| cpe:2.3:a:freescout:freescout:*:*:*:*:*:*:*:* |
|
|
|
1.8.213 |
Related information, measures and tools
Common Vulnerabilities List