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
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Advisories
No advisories yet.
Fixes
Solution
Update Mattermost to versions 11.1.0, 10.11.5, 10.5.13 or higher.
Workaround
No workaround given by the vendor.
References
| Link | Providers |
|---|---|
| https://mattermost.com/security-updates |
|
History
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
|
MITRE
Status: PUBLISHED
Assigner: Mattermost
Published:
Updated: 2025-12-02T09:28:44.436Z
Reserved: 2025-12-02T09:10:03.197Z
Link: CVE-2025-13870
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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