Mattermost Playbooks exposes private channel metadata to unauthorized users via run metadata API
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 10.9.0, 10.5.6, 9.11.16, 10.8.1, 10.7.3, 10.6.6 or higher.
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-19558 | Mattermost Incorrect Authorization vulnerability |
Github GHSA |
GHSA-wgvp-jj4w-88hf | Mattermost Incorrect 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% (0.202% probability within 30 days)
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
|
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mattermost
Mattermost mattermost Server |
|
| CPEs | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* cpe:2.3:a:mattermost:mattermost_server:10.8.0:-:*:*:*:*:*:* cpe:2.3:a:mattermost:mattermost_server:10.8.0:rc1:*:*:*:*:*:* cpe:2.3:a:mattermost:mattermost_server:10.8.0:rc2:*:*:*:*:*:* cpe:2.3:a:mattermost:mattermost_server:10.8.0:rc3:*:*:*:*:*:* |
|
| Vendors & Products |
Mattermost
Mattermost mattermost Server |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly validate channel membership when retrieving playbook run metadata, allowing authenticated users who are playbook members but not channel members to access sensitive information about linked private channels including channel name, display name, and participant count through the run metadata API endpoint. | |
| Title | Mattermost Playbooks exposes private channel metadata to unauthorized users via run metadata API | |
| Weaknesses | CWE-863 | |
| References |
| |
| Metrics |
cvssV3_1
|