Feed/CVE-2026-6961
CVE-2026-6961HIGHCVSS 7.6

CVE-2026-6961

Published Jun 12, 2026·Updated Aug 24, 2026

NVD 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

Affected Packages (2)

github.com/mattermost/mattermost/server/v8GO
From 8.0.0-20250731163400-5b955468ea1e
Fixed in 8.0.0-20260423180926-c021eeaff8f0
github.com/mattermost/mattermost-serverGO
Fixed in 11.6.1

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:L

References

View on NVD Search GitHub Search Google

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