CVE-2025-6226
BaseFortify
Publication date: 2025-07-18
Last updated on: 2025-10-02
Assigner: Mattermost, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mattermost | mattermost_server | From 9.11.0 (inc) to 9.11.17 (exc) |
| mattermost | mattermost_server | From 10.5.0 (inc) to 10.5.7 (exc) |
| mattermost | mattermost_server | From 10.7.0 (inc) to 10.7.4 (exc) |
| mattermost | mattermost_server | From 10.8.0 (inc) to 10.8.2 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-306 | The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in certain versions of Mattermost where the system fails to verify authorization when retrieving cached posts by PendingPostID. This flaw allows an authenticated user to access and read posts in private channels they are not authorized to view by guessing the PendingPostID of recently created posts.
How can this vulnerability impact me? :
The vulnerability can lead to unauthorized disclosure of sensitive information by allowing authenticated users to read private channel posts they should not have access to. This can compromise confidentiality and potentially expose private communications within an organization.