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.
2024-08-01T15:15:13.900
2024-09-04T16:55:35.570
Analyzed
CVSSv3.1: 2.7 (LOW)
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Application | mattermost | mattermost_server | < 9.5.7 | Yes |
Application | mattermost | mattermost_server | 9.9.0 | Yes |