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Mattermost allows team admins to promote guests to team admins

Low severity GitHub Reviewed Published Apr 26, 2024 to the GitHub Advisory Database • Updated Apr 26, 2024

Package

gomod github.com/mattermost/mattermost-server (Go)

Affected versions

>= 9.5.0, <= 9.5.2
>= 8.1.0, <= 8.1.11

Patched versions

9.5.3
8.1.12

Description

Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes, which allows an attacker authenticated as a team admin to promote guests to team admins via crafted HTTP requests.

References

Published by the National Vulnerability Database Apr 26, 2024
Published to the GitHub Advisory Database Apr 26, 2024
Reviewed Apr 26, 2024
Last updated Apr 26, 2024

Severity

Low
2.7
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

Weaknesses

CVE ID

CVE-2024-4195

GHSA ID

GHSA-5fh7-7mw7-mmx5

Source code

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