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Description

Mattermost versions 10.11.x <= 10.11.1, 10.10.x <= 10.10.2, 10.5.x <= 10.5.10 fail to verify a user has permission to join a Mattermost team using the original invite token which allows any attacked to join any team on a Mattermost server regardless of restrictions via manipulating the OAuth state.

PUBLISHED Reserved 2025-09-16 | Published 2025-10-16 | Updated 2025-10-22 | Assigner Mattermost




HIGH: 8.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Problem types

CWE-862: Missing Authorization

Product status

Default status
unaffected

10.11.0 (semver)
affected

10.10.0 (semver)
affected

10.5.0 (semver)
affected

10.12.0
unaffected

10.11.2
unaffected

10.10.3
unaffected

10.5.11
unaffected

Credits

DoyenSec finder

References

mattermost.com/security-updates

cve.org (CVE-2025-58073)

nvd.nist.gov (CVE-2025-58073)

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