CVE-2025-6227

Invite token is used as part of the secure communication

CVSS 2.2 LOWEPSS 0.2%CWE-522

Vexday Risk Score

8Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 2.2EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

18 Jul 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Mattermost versions 10.5.x <= 10.5.7, 9.11.x <= 9.11.16 fail to negotiate a new token when accepting the invite which allows a user that intercepts both invite and password to send synchronization payloads to the server that originally created the invite via the REST API.

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N

Affected products

Mattermost · Mattermost

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References

https://mattermost.com/security-updates