CVE-2025-41410CWE-862broken-access-control

CVE-2025-41410

Medium · published October 16, 2025

CVSS v3.1
5.4
EPSS
0%
Percentile
22.0
In the wild
Unconfirmed
What it is

Mattermost versions 10.10.x <= 10.10.2, 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to validate email ownership during Slack import process which allows attackers to create verified user accounts with arbitrary email domains via malicious Slack import data to bypass email-based team access restrictions

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00304 · 22.0th percentile
Weakness
CWE-862 · Missing Authorization
Published
2025-10-16T13:15Z
Affected products (3)
ProductVersionsFixed in
mattermost/mattermost_server≥ 10.5.0, < 10.5.1110.5.11
mattermost/mattermost_server≥ 10.10.0, < 10.10.310.10.3
mattermost/mattermost_server≥ 10.11.0, < 10.11.310.11.3
References (1)
https://mattermost.com/security-updates · [email protected]
EPSS history
Timeline
  • 16 OCT 08:39Z
    Slack import bypasses email verification for team access controls
    cvelistv5