CVE-2025-27715 | THREATINT

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.

PUBLISHED 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 (semver)

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)

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