QwikSec

Security Database

CVE

CWE

Training

CVE Database
/

CVE-2025-11777

Back to search

CVE-2025-11777

Published: Nov 13, 2025

Modified: Nov 13, 2025

PUBLISHED

CVSS v3.1

3.1

LOW

Description

Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to properly validate team membership permissions in the Add Channel Member API which allows users from one team to access user metadata and channel membership information from other teams via the API endpoint

VendorProductVersions

Mattermost

Mattermost

affected
10.11.0 - <= 10.11.3
affected
10.5.0 - <= 10.5.11
unaffected
11.0.0
unaffected
10.11.4
unaffected
10.5.12

Weaknesses (CWE)

CWE-863

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

References

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Start Training

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.

Scan Now