CVE-2025-13324

Lack of Invalidation of Legacy Remote Cluster Invite Tokens After Confirmation

State: Published
Severity: 3.7 Low
Published: Dec 17, 2025
Updated: Dec 24, 2025
Reserved: Nov 17, 2025

Description

Mattermost versions 10.11.x <= 10.11.5, 11.0.x <= 11.0.4, 10.12.x <= 10.12.2 fail to invalidate remote cluster invite tokens when using the legacy (version 1) protocol or when the confirming party does not provide a refreshed token, which allows an attacker who has obtained an invite token to authenticate as the remote cluster and perform limited actions on shared channels even after the invitation has been legitimately confirmed.

Scores

CVSS	Score	Vector	Source
3.1	3.7 Low	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N	Mattermost

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
MattermostMattermost	10.11.0 through 10.11.5Affected 11.0.0 through 11.0.4Affected 10.12.0 through 10.12.2Affected 11.1.0Not affected 10.11.6Not affected 11.0.5Not affected 10.12.3Not affected

References

https://mattermost.com/security-updates

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