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 fail to validate that a username returned during bot registration belongs to a bot account, which allows an unprivileged attacker to intercept private messages sent by plugins via direct message channels by pre-registering a user account with a predictable plugin bot username.. Mattermost Advisory ID: MMSA-2026-00649
CVSS 5.3EPSS 0.19%Risque 0.54
Voir la source- Publication
- 2026-06-12 17:16:26
- Versions concernées
- <=11.6.1,<=11.5.4,<=10.11.15,<=10.11.16
- Type
- Application web
- Vecteur
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N