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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.

PUBLISHED Reserved 2025-11-17 | Published 2025-12-17 | Updated 2025-12-24 | Assigner Mattermost




LOW: 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Problem types

CWE-863: Incorrect Authorization

Product status

Default status
unaffected

10.11.0 (semver)
affected

11.0.0 (semver)
affected

10.12.0 (semver)
affected

11.1.0
unaffected

10.11.6
unaffected

11.0.5
unaffected

10.12.3
unaffected

Credits

daw10 finder

References

mattermost.com/security-updates

cve.org (CVE-2025-13324)

nvd.nist.gov (CVE-2025-13324)

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Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.