CVE-2026-20796

LOW

3.1

Descricao

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

Detalhes CVE

Pontuacao CVSS v3.13.1

SeveridadeLOW

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

Vetor de ataqueNETWORK

ComplexidadeHIGH

Privilegios necessariosLOW

Interacao do usuarioNONE

Publicado2/13/2026

Ultima modificacao2/23/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

mattermost:mattermost_server

Fraquezas (CWE)

CWE-367

Referencias

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

Correlacoes IOC

Sem correlacoes registradas

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