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GHSA-63cv-4pc2-4fcf

Mattermost Exposure of Sensitive Information to an Unauthorized Actor vulnerability

Source: GitHub Advisory Database (reviewed) Moderate CVE-2023-6459

Packages

EcosystemPackageAffectedFixed in
Go github.com/mattermost/mattermost-server/v6 < 7.8.14 7.8.14
Go github.com/mattermost/mattermost/server/v8 < 8.1.5 8.1.5

Details

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

Mattermost is grouping calls in the /metrics endpoint by id and reports that id in the response. Since this id is the channelID, the public /metrics endpoint is revealing channelIDs.

References

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