Description

Mattermost versions 9.9.x <= 9.9.0 and 9.5.x <= 9.5.6 fail to validate the source of sync messages and only allow the correct remote IDs, which allows a malicious remote to set arbitrary RemoteId values for synced users and therefore claim that a user was synced from another remote.

Related CPE's

a

mattermost

mattermost_server

2

References

https://mattermost.com/security-updates

Vendor Advisory

Weaknesses

[email protected]

Secondary
CWE-284

[email protected]

Primary
CWE-346

CVSS impact metrics

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

2.7 · Low

Information

Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2024-08-01T15:15:13.900Z

2 years ago

Last modified

2026-06-17T07:48:27.793Z

3 months ago