CVE-2026-20796

LOW

3.1

Descripcion

Mattermost versions 10.11.x <= 10.11.9 fail to properly validate channel membership at the time of data retrieval which allows a deactivated user to learn team names they should not have access to via a race condition in the /common_teams API endpoint.. Mattermost Advisory ID: MMSA-2025-00549

Detalles CVE

Puntuacion CVSS v3.13.1

SeveridadLOW

Vector CVSSCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Vector de ataqueNETWORK

ComplejidadHIGH

Privilegios requeridosLOW

Interaccion usuarioNONE

Publicado2/13/2026

Ultima modificacion2/23/2026

Fuentenvd

Avistamientos honeypot0

Productos afectados

mattermost:mattermost_server

Debilidades (CWE)

CWE-367

Referencias

https://mattermost.com/security-updates(responsibledisclosure@mattermost.com)

Correlaciones IOC

Sin correlaciones registradas

This product uses data from the NVD API but is not endorsed or certified by the NVD.