GHSA-q22q-2rrf-m27pCriticalCVSS 8.7

Mattermost allows unsolicited invites to expose access to local channels

Published
August 1, 2024
Last Modified
November 18, 2024

🔗 CVE IDs covered (1)

CVE-2024-39777 →

📋 Description

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to disallow unsolicited invites to expose access to local channels, when shared channels are enabled, which allows a malicious remote to send an invite with the ID of an existing local channel, and that local channel will then become shared without the consent of the local admin.

🎯 Affected products4

  • go/github.com/mattermost/mattermost/server/v8:>= 9.9.0, < 9.9.1
  • go/github.com/mattermost/mattermost/server/v8:>= 9.5.0, < 9.5.7
  • go/github.com/mattermost/mattermost/server/v8:>= 9.7.0, < 9.7.6
  • go/github.com/mattermost/mattermost/server/v8:>= 9.8.0, < 9.8.1

🔗 References (3)