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Security Advisories

CVE-2025-27571

NVD

https://nvd.nist.gov/vuln/detail/CVE-2025-27571

Severity

4.3

Medium

CVSS V3

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Description

Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to check the "Allow Users to View Archived Channels" configuration when fetching channel metadata of a post from archived channels, which allows authenticated users to access such information when a channel is archived.

References

  • https://nvd.nist.gov/vuln/detail/CVE-2025-27571
  • https://github.com/advisories/GHSA-h4rr-f37j-4hh7
  • https://pkg.go.dev/vuln/GO-2025-3619
  • https://mattermost.com/security-updates

Affected packages

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