CVE-2025-6465 is a path traversal vulnerability affecting Mattermost server versions 10.8.x, 10.5.x, 10.10.x, and 10.9.x. It allows authenticated users with file upload permissions to overwrite file attachment thumbnails due to improper sanitization of filenames in file streaming APIs. Rated as MEDIUM severity (CVSS 4.3), this vulnerability has a low attack complexity and could lead to unauthorized modification of data, but does not impact confidentiality or availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 10.5.0, <= 10.5.8CPE match | cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:* | ||
>= 10.8.0, <= 10.8.3CPE match | cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:* | ||
>= 10.9.0, <= 10.9.3CPE match | cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:* | ||
>= 10.5.0, < 10.5.9CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | ||
>= 10.8.0, < 10.8.4CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
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