SecuriTricks - CVE-2025-14350

Description

Mattermost versions 11.1.x <= 11.1.2, 10.11.x <= 10.11.9, 11.2.x <= 11.2.1 fail to properly validate team membership when processing channel mentions which allows authenticated users to determine the existence of teams and their URL names via posting channel shortlinks and observing the channel_mentions property in the API response. Mattermost Advisory ID: MMSA-2025-00563

Product(s) Impacted

Vendor	Product	Versions
Mattermost	Mattermost	11.1.0-11.1.2, 10.11.0-10.11.9, 11.2.0-11.2.1

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-862

Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

*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	11.1.0-11.1.2	/	/	/	/	/	/	/
a	mattermost	mattermost	10.11.0-10.11.9	/	/	/	/	/	/	/
a	mattermost	mattermost	11.2.0-11.2.1	/	/	/	/	/	/	/

References

https://mattermost.com/security-updates

CVSS Score

4.3 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: LOW
Scope: UNCHANGED
Confidentiality Impact: LOW
Integrity Impact: NONE
Availability Impact: NONE

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

View Vector String

Timeline

Published: Feb. 16, 2026, 1:15 p.m.
Last Modified: Feb. 16, 2026, 1:15 p.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

CVE-2025-14350