Vulnerability Details CVE-2025-13767
Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fails to validate user channel membership when attaching Mattermost posts as comments to Jira issues, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have access to.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 7.4%
CVSS Severity
CVSS v3 Score 4.3
References
Products affected by CVE-2025-13767
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cpe:2.3:a:mattermost:mattermost_server:10.11.0
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cpe:2.3:a:mattermost:mattermost_server:10.11.1
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cpe:2.3:a:mattermost:mattermost_server:10.11.2
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cpe:2.3:a:mattermost:mattermost_server:10.11.3
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cpe:2.3:a:mattermost:mattermost_server:10.11.4
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cpe:2.3:a:mattermost:mattermost_server:10.11.5
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cpe:2.3:a:mattermost:mattermost_server:10.11.6
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cpe:2.3:a:mattermost:mattermost_server:10.11.7
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cpe:2.3:a:mattermost:mattermost_server:10.12.0
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cpe:2.3:a:mattermost:mattermost_server:10.12.1
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cpe:2.3:a:mattermost:mattermost_server:10.12.2
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cpe:2.3:a:mattermost:mattermost_server:10.12.3
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cpe:2.3:a:mattermost:mattermost_server:11.0.0
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cpe:2.3:a:mattermost:mattermost_server:11.0.1
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cpe:2.3:a:mattermost:mattermost_server:11.0.2
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cpe:2.3:a:mattermost:mattermost_server:11.0.3
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cpe:2.3:a:mattermost:mattermost_server:11.0.4
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cpe:2.3:a:mattermost:mattermost_server:11.0.5
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cpe:2.3:a:mattermost:mattermost_server:11.1.0