Mattermost versions 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to validate the user permission when accessing the files and subscribing to the block in Boards, which allows an authenticated user to access other board files and was able to subscribe to the block from other boards that the user does not have access to
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
|
History
Wed, 03 Dec 2025 21:00:00 +0000
| 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
|
Wed, 03 Dec 2025 12:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Mattermost
Mattermost mattermost |
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| Vendors & Products |
Mattermost
Mattermost mattermost |
Tue, 02 Dec 2025 15:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Tue, 02 Dec 2025 09:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Mattermost versions 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to validate the user permission when accessing the files and subscribing to the block in Boards, which allows an authenticated user to access other board files and was able to subscribe to the block from other boards that the user does not have access to | |
| Title | Unauthorized access and subscription vulnerability in Boards | |
| Weaknesses | CWE-306 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: Mattermost
Published: 2025-12-02T09:28:44.436Z
Updated: 2025-12-02T14:38:23.000Z
Reserved: 2025-12-02T09:10:03.197Z
Link: CVE-2025-13870
Updated: 2025-12-02T14:38:19.956Z
Status : Analyzed
Published: 2025-12-02T10:16:01.270
Modified: 2025-12-03T20:57:20.907
Link: CVE-2025-13870
No data.
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