CVE-2025-6465— Path traversal in image upload with preview overwrite
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 10.8.3及之前10.8.x版本、10.5.8及之前10.5.x版本、10.10.0及之前10.10.x版本、10.9.3及之前10.9.x版本存在安全漏洞，该漏洞源于未清理文件名，可能导致路径遍历。
Possible ATT&CK Techniques 1 AI
T1565.001 · Stored Data Manipulation
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I. Basic Information for CVE-2025-6465
Vulnerability Information
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Vulnerability Title
Path traversal in image upload with preview overwrite
Source: CVE Program / CVE List V5
Vulnerability Description
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 10.10.x <= 10.10.0, 10.9.x <= 10.9.3 fail to sanitize file names which allows users with file upload permission to overwrite file attachment thumbnails via path traversal in file streaming APIs.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
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 10.8.3及之前10.8.x版本、10.5.8及之前10.5.x版本、10.10.0及之前10.10.x版本、10.9.3及之前10.9.x版本存在安全漏洞，该漏洞源于未清理文件名，可能导致路径遍历。
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 | 10.8.0 ~ 10.8.3 | - |
|
II. Public POCs for CVE-2025-6465
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Mattermost · 2025-08-21 · 9 CVEs total
| CVE-2025-49222 | 6.8 MEDIUM | Mattermost Shared Channel Upload Type Validation Bypass |
| CVE-2025-8023 | 6.8 MEDIUM | Path Traversal in Template Upload Allows Uploading Files Outside Target Directory |
| CVE-2025-36530 | 6.8 MEDIUM | Import Path Traversal Enables Unauthorized Unsigned Plugin Installation |
| CVE-2025-8402 | 4.9 MEDIUM | Nil pointer dereference in bulk import crashes server |
| CVE-2025-47870 | 4.3 MEDIUM | Team invite ID leaked to team admin with no member invite privileges |
| CVE-2025-53971 | 3.8 LOW | Channel and Team Membership APIs inadvertently allow loss of Member privileges. |
| CVE-2025-47700 | 3.5 LOW | AI plugin APIs can be triggered using post actions |
| CVE-2025-49810 | 3.5 LOW | Thread summarization allows persistent access to channel |
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Same weakness: CWE-22
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V. Comments for CVE-2025-6465
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