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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2025-9076

Mattermost Server exposes sensitive user credentials during shared channel membership synchronization

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Status
Published
Published
Updated
Assigning organization
Mattermost

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mattermost Mattermost

Default version status: unaffected

  • 10.10.0 to ≤ 10.10.1affected
  • 10.11.0unaffected
  • 10.10.2unaffected

References