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THREATINT
PUBLISHED

CVE-2025-27715

Auto-Enrollment of Team Admins into Private Channels without explicit consent



Description

Mattermost versions 9.11.x <= 9.11.8 fail to prompt for explicit approval before adding a team admin to a private channel, which team admins to joining private channels via crafted permalink links without explicit consent from them.

Reserved 2025-03-20 | Published 2025-03-21 | Updated 2025-03-21 | Assigner Mattermost


LOW: 3.3CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N

Problem types

CWE-863: Incorrect Authorization

Product status

Default status
unaffected

9.11.0
affected

10.5.0
unaffected

9.11.9
unaffected

Credits

Joram Wilander finder

References

mattermost.com/security-updates

cve.org (CVE-2025-27715)

nvd.nist.gov (CVE-2025-27715)

Download JSON

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