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MEDIUM 4.3 Go

Mattermost fails to filter invite IDs based on user permissions

GHSA-fx49-m253-27jj · CVE-2026-2463 · GO-2026-4735

Published · Modified

Description

Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to filter invite IDs based on user permissions, which allows regular users to bypass access control restrictions and register unauthorized accounts via leaked invite IDs during team creation. Mattermost Advisory ID: MMSA-2025-00565

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