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
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| Publication Date |
May 28, 2026, 12:16 a.m. |
| Registration Date |
May 28, 2026, 4:14 a.m. |
| Last Update |
May 28, 2026, 12:16 a.m. |
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CVSS3.1 : HIGH
|
| スコア |
8.0
|
| Vector |
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H |
| 攻撃元区分(AV) |
ネットワーク |
| 攻撃条件の複雑さ(AC) |
高 |
| 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) |
変更あり |
| 機密性への影響(C) |
高 |
| 完全性への影響(I) |
高 |
| 可用性への影響(A) |
高 |
Related information, measures and tools
Common Vulnerabilities List