CVE-2025-55070
Nov. 17, 2025, 5:51 p.m.
6.5
Medium
Description
Mattermost versions <11 fail to enforce multi-factor authentication on WebSocket connections which allows unauthenticated users to access sensitive information via WebSocket events
Product(s) Impacted
| Vendor | Product | Versions |
|---|---|---|
| Mattermost |
|
|
Weaknesses
Common security weaknesses mapped to this vulnerability.
CWE-306
Missing Authentication for Critical Function
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
*CPE(s)
Affected systems and software identified for this CVE.
| Type | Vendor | Product | Version | Update | Edition | Language | Software Edition | Target Software | Target Hardware | Other Information |
|---|---|---|---|---|---|---|---|---|---|---|
| a | mattermost | mattermost_server | / | / | / | / | / | / | / | / |
References
Tags
CVSS Score
CVSS Data - 3.1
- Attack Vector: NETWORK
- Attack Complexity: LOW
- Privileges Required: LOW
- Scope: UNCHANGED
- Confidentiality Impact: HIGH
- Integrity Impact: NONE
- Availability Impact: NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Timeline
Published: Nov. 14, 2025, 8:15 a.m.
Last Modified: Nov. 17, 2025, 5:51 p.m.
Last Modified: Nov. 17, 2025, 5:51 p.m.
Status : Analyzed
CVE has had analysis completed and all data associations made.
More infoSource
responsibledisclosure@mattermost.com
*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.