CVE-2026-6517
| Summary |
Mattermost Desktop App versions <=6.1 5.5.13.0 fail to restrict the allow list of domains to which NTLM credentials were forwarded to in the Mattermost Desktop App which allows any user on a server without the image proxy enabled to intercept other users credentials via embedding an image that routes to an external web server. Mattermost Advisory ID: MMSA-2026-00651
|
| Publication Date |
June 15, 2026, 11:16 p.m. |
| Registration Date |
June 16, 2026, 4:12 a.m. |
| Last Update |
June 15, 2026, 11:16 p.m. |
|
CVSS3.1 : MEDIUM
|
| スコア |
6.3
|
| Vector |
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N |
| 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) |
低 |
| 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) |
なし |
| 可用性への影響(A) |
なし |
Related information, measures and tools
Common Vulnerabilities List