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GHSA-4578-6gjh-f2jm

Mattermost allows an unauthorized Guest user access to Playbook

Source: GitHub Advisory Database (reviewed) Moderate CVE-2025-3228

Packages

EcosystemPackageAffectedFixed in
Go github.com/mattermost/mattermost-server < 0.0.0-20250520060012-d0380305ef7a 0.0.0-20250520060012-d0380305ef7a
Go github.com/mattermost/mattermost/server/v8 < 8.0.0-20250520060012-d0380305ef7a 8.0.0-20250520060012-d0380305ef7a
Go github.com/mattermost/mattermost/server/v8 >= 10.5.0, < 10.5.6 10.5.6
Go github.com/mattermost/mattermost/server/v8 >= 9.11.0, < 9.11.16 9.11.16
Go github.com/mattermost/mattermost/server/v8 >= 10.8.0, < 10.8.1 10.8.1
Go github.com/mattermost/mattermost/server/v8 >= 10.7.0, < 10.7.3 10.7.3
Go github.com/mattermost/mattermost/server/v8 >= 10.6.0, < 10.6.6 10.6.6

Details

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

Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly retrieve requestorInfo from playbooks handler for guest users which allows an attacker access to the playbook run.

References

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