Mattermost versions 10.10.x <= 10.10.1 fail to properly sanitize user data during shared channel membership synchronization, which allows malicious or compromised remote clusters to access sensitive user information via unsanitized user objects. This vulnerability affects Mattermost Server instances with shared channels enabled.
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https://mattermost.com/security-updates |
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History
Mon, 22 Sep 2025 16:45:00 +0000
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Wed, 17 Sep 2025 11:00:00 +0000
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Mon, 15 Sep 2025 14:15:00 +0000
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ssvc
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Mon, 15 Sep 2025 10:15:00 +0000
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Description | Mattermost versions 10.10.x <= 10.10.1 fail to properly sanitize user data during shared channel membership synchronization, which allows malicious or compromised remote clusters to access sensitive user information via unsanitized user objects. This vulnerability affects Mattermost Server instances with shared channels enabled. | |
Title | Mattermost Server exposes sensitive user credentials during shared channel membership synchronization | |
Weaknesses | CWE-862 | |
References |
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Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Mattermost
Published: 2025-09-15T10:06:15.094Z
Updated: 2025-09-15T14:05:16.235Z
Reserved: 2025-08-15T15:26:17.148Z
Link: CVE-2025-9076

Updated: 2025-09-15T14:05:11.941Z

Status : Analyzed
Published: 2025-09-15T10:15:32.450
Modified: 2025-09-20T02:52:38.957
Link: CVE-2025-9076

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