Mattermost Server exposes sensitive user credentials during shared channel membership synchronization
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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No data.
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost | — |
Vendor Solution
Update Mattermost to versions 10.11.0, 10.10.2 or higher.
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-29165 | Mattermost Missing Authorization vulnerability |
Github GHSA |
GHSA-3vcm-c42p-3hhf | Mattermost Missing Authorization vulnerability |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.260% probability within 30 days)
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mattermost mattermost Server
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| CPEs | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Mattermost mattermost Server
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| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mattermost
Mattermost mattermost |
|
| Vendors & Products |
Mattermost
Mattermost mattermost |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost versions 10.10.x <= 10.10.1 fail to properly sanitize user data during shared channel membership synchronization, which allows malicious or compromised remote clusters to access sensitive user information via unsanitized user objects. This vulnerability affects Mattermost Server instances with shared channels enabled. | |
| Title | Mattermost Server exposes sensitive user credentials during shared channel membership synchronization | |
| Weaknesses | CWE-862 | |
| References |
| |
| Metrics |
cvssV3_1
|