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CVE-2025-3446 Moderate

Mattermost Fails to Validate Team Invite Permissions in github.com/mattermost/mattermost-server

Mattermost Fails to Validate Team Invite Permissions in github.com/mattermost/mattermost-server

Exploit probability 0.2%
Published May 23, 2025
Required by Not available
Last source change March 3, 2026

02 / AFFECTED SOFTWARE

Affected packages

Unknown Unknown

60 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/v8

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities CVE-2025-3446

Mattermost versions 10.6.x <= 10.6.1, 10.5.x <= 10.5.2, 10.4.x <= 10.4.4, 9.11.x <= 9.11.11 fail to check the correct permissions which allows authenticated users who only have permission to invite non-guest users to a team to add guest users to that team via the API to add a single user to a team.

View original source
Open Source Vulnerabilities GO-2025-3693

Mattermost Fails to Validate Team Invite Permissions in github.com/mattermost/mattermost-server

View original source
Open Source Vulnerabilities GHSA-r7r2-m3vr-c8qc

Mattermost versions 10.6.x <= 10.6.1, 10.5.x <= 10.5.2, 10.4.x <= 10.4.4, 9.11.x <= 9.11.11 fail to check the correct permissions which allows authenticated users who only have permission to invite non-guest users to a team to add guest users to that team via the API to add a single user to a team.

View original source

05 / REFERENCES

Further evidence