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CVE-2025-3228 Moderate

Mattermost allows an unauthorized Guest user access to Playbook in github.com/mattermost/mattermost-server

Mattermost allows an unauthorized Guest user access to Playbook in github.com/mattermost/mattermost-server

Exploit probability 0.3%
Published July 28, 2025
Required by Not available
Last source change March 3, 2026

02 / AFFECTED SOFTWARE

Affected packages

Unknown Unknown

76 explicit affected versions

Go github.com/mattermost/mattermost-server
Go github.com/mattermost/mattermost-server/v5
Go github.com/mattermost/mattermost-server/v6
Go github.com/mattermost/mattermost/server/v8
Go github.com/mattermost/mattermost-server
Go github.com/mattermost/mattermost/server/v8

1 explicit affected versions

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities GO-2025-3771

Mattermost allows an unauthorized Guest user access to Playbook in github.com/mattermost/mattermost-server

View original source
Open Source Vulnerabilities GHSA-4578-6gjh-f2jm

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.

View original source
Open Source Vulnerabilities CVE-2025-3228

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.

View original source

05 / REFERENCES

Further evidence