CVE-2024-43780— Unauthorized channel file upload
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I. Basic Information for CVE-2024-43780
Vulnerability Information
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Vulnerability Title
Unauthorized channel file upload
Source: NVD (National Vulnerability Database)
Vulnerability Description
Mattermost versions 9.9.x <= 9.9.1, 9.5.x <= 9.5.7, 9.10.0, 9.8.x <= 9.8.2 fail to enforce permissions which allows a guest user with read access to upload files to a channel.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
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 9.9.x版本至9.9.1版本、9.5.x版本至9.5.7版本、9.10.0版本和9.8.x版本至9.8.2版本存在安全漏洞，该漏洞源于未能强制执行权限，允许具有读取权限的用户将文件上传到频道。
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 | 9.9.0 ~ 9.9.1 | - |
II. Public POCs for CVE-2024-43780
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mattermost · 2024-08-22 · 10 CVEs total
| CVE-2024-42497 | 6.0 MEDIUM | Insufficient permissions checks on teams |
| CVE-2024-42411 | 5.3 MEDIUM | User creation date manipulation in POST /api/v4/users |
| CVE-2024-39810 | 4.9 MEDIUM | Server crash via Elasticsearch certificate file |
| CVE-2024-39836 | 4.8 MEDIUM | Munged email address used for password resets and notifications |
| CVE-2024-8071 | 4.7 MEDIUM | System Role with edit access to permissions can elevate themselves to system admin |
| CVE-2024-40886 | 4.6 MEDIUM | One-click Client-Side Path Traversal Leading to CSRF in User Management admin page |
| CVE-2024-32939 | 4.3 MEDIUM | Email addresses of remote users visible in props regardless of server settings |
| CVE-2024-43813 | 4.3 MEDIUM | IDOR when marking read a user's channel |
| CVE-2024-40884 | 2.7 LOW | Unauthorized disabling of invite URL |
IV. Related Vulnerabilities
Same product: Mattermost
- CVE-2026-3590
Race Condition in Guest Magic Link Authentication Allows Tok - CVE-2026-28741
CSRF Protection Bypass Allows Updating a User's Authenticati - CVE-2026-27769
Connected Workspaces: Malicious remote server can manipulate - CVE-2026-24661
Unbounded Request Body Read in MS Teams Plugin {{/changes}} - CVE-2026-21388
Unbounded Request Body Read in MS Teams Plugin {{/lifecycle}
Same vendor: Mattermost
- CVE-2026-3590
Race Condition in Guest Magic Link Authentication Allows Tok - CVE-2026-28741
CSRF Protection Bypass Allows Updating a User's Authenticati - CVE-2026-27769
Connected Workspaces: Malicious remote server can manipulate - CVE-2026-24661
Unbounded Request Body Read in MS Teams Plugin {{/changes}} - CVE-2026-21388
Unbounded Request Body Read in MS Teams Plugin {{/lifecycle}
Same weakness: CWE-284
- CVE-2026-8233
Dotouch XproUPF access control - CVE-2026-42569
phpvms: /importer authorization bypass causing full database - CVE-2026-42205
Avo: Broken Access Control: Unauthorized Execution of Arbitr - CVE-2026-41487
Langfuse: Improper role-based-access control in Langfuse LLM - CVE-2026-42278
UltraDAG: Smart Account Spending Policy Bypass via Pockets
V. Comments for CVE-2024-43780
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