CVE-2025-9081— IDOR in board file download allows any user to download any file by UUID
Quick assessment
Affected
Mattermost Mattermost
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Mattermost是美国Mattermost公司的一个开源协作平台。 Mattermost 10.5.8及之前的10.5.x版本和9.11.17及之前的9.11.x版本存在安全漏洞，该漏洞源于访问控制验证不足，可能导致经过身份验证的用户通过UUID枚举下载敏感文件。
Possible ATT&CK Techniques 1 AI
T1005 · Data from Local System
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I. Basic Information for CVE-2025-9081
Vulnerability Information
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Vulnerability Title
IDOR in board file download allows any user to download any file by UUID
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate access controls which allows any authenticated user to download sensitive files via board file download endpoint using UUID enumeration
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
Mattermost 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mattermost是美国Mattermost公司的一个开源协作平台。 Mattermost 10.5.8及之前的10.5.x版本和9.11.17及之前的9.11.x版本存在安全漏洞，该漏洞源于访问控制验证不足，可能导致经过身份验证的用户通过UUID枚举下载敏感文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Mattermost | Mattermost | 10.5.0 ~ 10.5.8 | - |
|
II. Public POCs for CVE-2025-9081
| # | POC Description | Source Link | Shenlong Link |
|---|
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V. Comments for CVE-2025-9081
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