- Description
- Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15, 10.11.x <= 10.11.16 Mattermost fails to sanitize FileInfo.Name received from federated peers during shared channel file sync, which allows an attacker who controls a federated server to write files to arbitrary locations within the target server's filestore via path traversal sequences in the filename field.. Mattermost Advisory ID: MMSA-2026-00661
- Source
- responsibledisclosure@mattermost.com
- NVD status
- Received
CVSS 3.1
- Type
- Secondary
- Base score
- 7.6
- Impact score
- 4.7
- Exploitability score
- 2.3
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:L
- Severity
- HIGH
- responsibledisclosure@mattermost.com
- CWE-22
- Hype score
- Not currently trending