CVE-2026-10600
Medium
Description
Mattermost versions 11.8.x <= 11.8.0, 11.7.x <= 11.7.3, 11.6.x <= 11.6.5, 10.11.x <= 10.11.20 fail to bound the time and resource consumption of server-side document content extraction which allows an authenticated user with file-upload permission to degrade file uploads for all users on the server via repeatedly uploading small documents that are cheap to upload but expensive to extract, saturating the shared extraction worker pool.. Mattermost Advisory ID: MMSA-2026-00694
SeverityMedium
CVSS4.3
Exploit probability—
Product
Mattermost Server
PublishedJul 27, 2026
First seenJul 27, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- mattermost mattermost_server10.11.21, 11.6.6, 11.7.4, 11.8.1 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mattermost mattermost_server | 10.11.0 ≤ v < 10.11.21, 11.6.0 ≤ v < 11.6.6, 11.7.0 ≤ v < 11.7.4, 11.8.0 ≤ v < 11.8.1 | 10.11.21, 11.6.6, 11.7.4, 11.8.1 |
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