CVE-2026-6957
| Summary |
Mattermost Plugins versions <=1.1.5 fail to sanitize filenames received from federated peers before using them to construct export destination paths, which allows an administrator of a remote federated Mattermost server to write files to arbitrary locations within the target server's filestore via a malicious filename delivered through the shared-channel attachment sync protocol. Mattermost Advisory ID: MMSA-2026-00659
|
| Publication Date |
May 28, 2026, 12:16 a.m. |
| Registration Date |
May 28, 2026, 4:14 a.m. |
| Last Update |
June 2, 2026, 11:29 p.m. |
|
CVSS3.1 : MEDIUM
|
| スコア |
4.9
|
| Vector |
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N |
| 攻撃元区分(AV) |
ネットワーク |
| 攻撃条件の複雑さ(AC) |
低 |
| 攻撃に必要な特権レベル(PR) |
高 |
| 利用者の関与(UI) |
不要 |
| 影響の想定範囲(S) |
変更なし |
| 機密性への影響(C) |
なし |
| 完全性への影響(I) |
高 |
| 可用性への影響(A) |
なし |
Affected software configurations
| Configuration1 |
or higher |
or less |
more than |
less than |
| cpe:2.3:a:mattermost:legal_hold:*:*:*:*:*:mattermost:*:* |
|
1.1.5 |
|
|
Related information, measures and tools
Common Vulnerabilities List