CVE-2025-13324

Lack of Invalidation of Legacy Remote Cluster Invite Tokens After Confirmation

Published: Dec 17, 2025Updated: Dec 29, 2025 Sources: CVE List NVD GHSACWE-863

3.7LOW

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:HAttack Complexity

High

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-863

Affected Products

package-ecosystem

github.com/mattermost/mattermost

OSS Libraries

github.com/mattermost/mattermost/server/v8

OSS Libraries

github.com/mattermost/mattermost-server

OSS Libraries

Mattermost

commercial·US

MattermostOn-premWeb App

Communications / messaging-chat

mattermost serverOn-premWeb App

Communications / messaging-chat

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

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References

https://mattermost.com/security-updates

mattermost.com

https://nvd.nist.gov/vuln/detail/CVE-2025-13324

nvd.nist.gov

https://github.com/mattermost/mattermost/commit/364c2203de00fe0d8424b6b46d6f0eeb02a2539a

github.com

and 3 more references View all →

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