Mattermost Guest User Information Disclosure Vulnerability
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mattermost | Mattermost | unaffected |
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Configuration 1 [-]
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No data.
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | — |
Vendor Solution
Update Mattermost to versions 10.8.0, 10.5.5, 9.11.14 or higher.
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-18094 | Mattermost allows guest users to view information about public teams they are not members of |
Github GHSA |
GHSA-jwhw-xf5v-qgxc | Mattermost allows guest users to view information about public teams they are not members of |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.231% probability within 30 days)
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
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| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
epss
|
epss
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mattermost
Mattermost mattermost Server |
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| CPEs | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Mattermost
Mattermost mattermost Server |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost versions 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly restrict API access to team information, allowing guest users to bypass permissions and view information about public teams they are not members of via a direct API call to /api/v4/teams/{team_id}. | |
| Title | Mattermost Guest User Information Disclosure Vulnerability | |
| Weaknesses | CWE-863 | |
| References |
| |
| Metrics |
cvssV3_1
|