1. Home
  2. CVE Database
  3. CVE-2025-27715
LOW · 3.3

CVE-2025-27715

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 wit...

Vulnerability 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.

CVSS Score

3.3

LOW

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE

Affected Products

VendorProductVersions
MattermostMattermost Server>= 9.11.0, < 9.11.9

Related Weaknesses (CWE)

CWE-863

References

FAQ

What is CVE-2025-27715?

CVE-2025-27715 is a vulnerability with a CVSS score of 3.3 (LOW). 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 wit...

How severe is CVE-2025-27715?

CVE-2025-27715 has been rated LOW with a CVSS base score of 3.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-27715?

Check the references section above for vendor advisories and patch information. Affected products include: Mattermost Mattermost Server.