CVE-2025-6465 — Path traversal in image upload with preview overwrite
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 overwr…
Published: 2025-08-21 · CVSS: 4.3 · CVSS 3.1
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 · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7