GitHub Advisoryadvisory · Go

GHSA-wvgv-4fc3-2rcp Mattermost doesn't prevent disclosure of created user password

MEDIUM Published 2026-05-18 Modified 2026-06-01 Official page ↗
Aliases
CVE-2026-6345
Ecosystem
Go
Packages
github.com/mattermost/mattermost/server/v8, github.com/mattermost/mattermost-server
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Weaknesses
CWE-522
Reviewed
2026-06-01

Affected packages

• Go github.com/mattermost/mattermost/server/v8: >= 11.5.0, < 11.5.2 → fixed in 11.5.2 • Go github.com/mattermost/mattermost/server/v8: >= 10.11.0, < 10.11.14 → fixed in 10.11.14 • Go github.com/mattermost/mattermost/server/v8: >= 11.4.0, < 11.4.4 → fixed in 11.4.4 • Go github.com/mattermost/mattermost/server/v8: < 8.0.0-20260311102650-3057ae7e83e9 → fixed in 8.0.0-20260311102650-3057ae7e83e9 • Go github.com/mattermost/mattermost-server: < 5.3.2-0.20260311102650-3057ae7e83e9 → fixed in 5.3.2-0.20260311102650-3057ae7e83e9

Description

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 doesn't prevent disclosure of created user password which allows a malicious attacker to impersonate a user via the use of some of those passwords.. Mattermost Advisory ID: MMSA-2026-00614

Related

Alias · CVE (1)

  • CVE-2026-6345 Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail prevent disclosure of created user password which allows a… vulnerability

Weakness · CWE (1)

  • CWE-522 Insufficiently Protected Credentials weakness

References