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GHSA-f72g-52v7-mg3p

Mattermost boards plugin fails to restrict download access to files

Source: GitHub Advisory Database (reviewed) Low CVE-2025-9081

Packages

EcosystemPackageAffectedFixed in
Go github.com/mattermost/mattermost-plugin-boards < 0.0.0-20250716054606-3f3e3becfe1d 0.0.0-20250716054606-3f3e3becfe1d
Go github.com/mattermost/mattermost/server/v8 < 8.0.0-20250721095935-11c36f4d1e44 8.0.0-20250721095935-11c36f4d1e44
Go github.com/mattermost/mattermost-server >= 10.5.0-rc1, < 10.5.9 10.5.9
Go github.com/mattermost/mattermost-server >= 9.11.0-rc1, < 9.11.18 9.11.18

Details

As written in the advisory (Markdown source, shown as plain text).

Mattermost versions 10.5.x <= 10.5.8, 9.11.x <= 9.11.17 fail to properly validate access controls which allows any authenticated user to download sensitive files via board file download endpoint using UUID enumeration

References

External links from the advisory. They lead to third-party sites.