CVE-2026-9693lowCWE-459

Mattermost thread memberships persist after team removal, exposing private channel thread metadata on re-invite

8Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 3.5epss 0.2%

probabilidade de exploração

0.2%top 95% das CVEs

exploração observada

nãonenhuma fonte reporta

Mattermost versions 10.11.x <= 10.11.20, 11.7.x <= 11.7.5 Mattermost fails to remove thread membership records when a user is removed from or leaves a team, which allows a previously removed user who is later re-invited to the team to view private channel thread root post content and metadata via the team threads API.. Mattermost Advisory ID: MMSA-2026-00682

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

Produtos afetados

Mattermost · Mattermost

Referências

https://mattermost.com/security-updates