CVE-2023-47858

Details of archived public channels are leaked to members of another team

Published Jan 2, 2024 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
Mattermost fails to properly verify the permissions needed for viewing archived public channels,  allowing a member of one team to get details about the archived public channels of another team via the GET /api/v4/teams/<team-id>/channels/deleted endpoint.

Remediation

Vendor Solution

Update Mattermost Server to versions 8.1.7, 9.0.5, 9.1.4, 9.2.3 or higher.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2024-0444 Mattermost fails to properly verify the permissions needed for viewing archived public channels,  allowing a member of one team to get details about the archived public channels of another team via the GET /api/v4/teams/<team-id>/channels/deleted endpoint.
Github GHSA Github GHSA GHSA-w88v-pjr8-cmv2 Mattermost viewing archived public channels permissions vulnerability
References
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Mattermost
Published
Updated
Jun 17, 2025, 8:29 PM
Reserved
Dec 21, 2023, 8:00 AM
Status
Modified
Published
Jan 2, 2024, 10:15 AM
Modified
Jun 17, 2026, 6:33 AM