GitHub Advisory DatabaseGHSA-VG6Q-84P8-QVQHMattermost allows a user on a remote to set their remote username prop to an arbitrary string
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
AI Score
Confidence
High
EPSS
Percentile
14.7%
Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5, 9.8.x <= 9.8.1 fail to disallow users to set their own remote username, when shared channels were enabled, which allows a user on a remote to set their remote username prop to an arbitrary string, which would be then synced to the local server as long as the user hadn’t been synced before.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| mattermost | mattermost | 9.9.0 | cpe:2.3:a:mattermost:mattermost:9.9.0:*:*:*:*:*:*:* |
| mattermost | mattermost | * | cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:* |
Related
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
AI Score
Confidence
High
EPSS
Percentile
14.7%