Vulnerability DatabaseCVE-2026-10600
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CVE-2026-10600
Published:July 27, 2026
Updated:August 06, 2026
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
Affected Packages
https://github.com/mattermost/mattermost.git (GITHUB):
Affected version(s) =v11.8.0 <v11.8.1
Fix Suggestion:
Update to version v11.8.1
https://github.com/mattermost/mattermost.git (GITHUB):
Affected version(s) >=v11.7.0 <v11.7.4
Fix Suggestion:
Update to version v11.7.4
https://github.com/mattermost/mattermost.git (GITHUB):
Affected version(s) >=v10.11.0 <v10.11.21
Fix Suggestion:
Update to version v10.11.21
https://github.com/mattermost/mattermost.git (GITHUB):
Affected version(s) >=v11.6.0 <v11.6.6
Fix Suggestion:
Update to version v11.6.6
github.com/mattermost/mattermost (GO):
Affected version(s) >=v11.6.1-rc1 <v11.6.6+incompatible
Fix Suggestion:
Update to version v11.6.6+incompatible
github.com/mattermost/mattermost (GO):
Affected version(s) >=v10.11.0+incompatible <v10.11.21+incompatible
Fix Suggestion:
Update to version v10.11.21+incompatible
github.com/mattermost/mattermost (GO):
Affected version(s) >=v11.7.1 <v11.7.4+incompatible
Fix Suggestion:
Update to version v11.7.4+incompatible
Related Resources (3)
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/10xxx/CVE-2026-10600.json
https://mattermost.com/security-updates
https://nvd.nist.gov/vuln/detail/CVE-2026-10600
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CVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Allocation of Resources Without Limits or Throttling
CWE-770
EPSS
Base Score:
0.22