What is CVE-2025-47870?

CVE-2025-47870 is a medium-severity vulnerability in Mattermost, classified under Missing Authentication for Critical Function. CVSS score: 4.3/10. Published 2025-08-21.

How severe is CVE-2025-47870?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Mattermost

CVE-2025-47870

Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2 fail to sanitize the team invite ID in the POST /api/v4/teams/:teamId/restore endpoint which allows an team admin with no member invite privileges to get the team’s invite id.

Vulnerability class: Broken Authentication

EPSS: 0.002 (12.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Mattermost — versions 10.8.0, 10.5.0, 9.11.0
Mattermost Mattermost_server

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

responsibledisclosure@mattermost.com (Vendor Advisory)

Frequently asked questions

What is CVE-2025-47870?: CVE-2025-47870 is a medium-severity vulnerability in Mattermost, classified under Missing Authentication for Critical Function. CVSS score: 4.3/10. Published 2025-08-21.
How severe is CVE-2025-47870?: Medium severity. CVSS v3 base score is 4.3 out of 10.