Vulnerability Details CVE-2024-39777
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 34.8%
CVSS Severity
CVSS v3 Score 8.7
References
Products affected by CVE-2024-39777
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cpe:2.3:a:mattermost:mattermost:9.5.0
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cpe:2.3:a:mattermost:mattermost:9.5.1
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cpe:2.3:a:mattermost:mattermost:9.5.2
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cpe:2.3:a:mattermost:mattermost:9.5.3
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cpe:2.3:a:mattermost:mattermost:9.5.4
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cpe:2.3:a:mattermost:mattermost:9.5.5
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cpe:2.3:a:mattermost:mattermost:9.5.6
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cpe:2.3:a:mattermost:mattermost:9.7.0
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cpe:2.3:a:mattermost:mattermost:9.7.1
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cpe:2.3:a:mattermost:mattermost:9.7.2
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cpe:2.3:a:mattermost:mattermost:9.7.3
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cpe:2.3:a:mattermost:mattermost:9.7.4
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cpe:2.3:a:mattermost:mattermost:9.7.5
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cpe:2.3:a:mattermost:mattermost:9.8.0
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cpe:2.3:a:mattermost:mattermost:9.8.1
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cpe:2.3:a:mattermost:mattermost:9.9.0