Vulnerability DatabaseCVE-2026-75025
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CVE-2026-75025
Published:September 16, 2026
Updated:September 22, 2026
Mattermost Desktop App versions <=6.2 6.2.2.0 Fixed an issue where Mattermost Desktop did not sufficiently restrict server-rendered content from accessing local or private network resources. Thanks to game0v3r for contributing to this improvement under the Mattermost responsible disclosure policy. Mattermost Advisory ID: MMSA-2026-00698
Affected Packages
https://github.com/mattermost/desktop.git (GITHUB):
Affected version(s) >=v6.3.0-rc.1 <v6.3.0-rc.3
Fix Suggestion:
Update to version v6.3.0-rc.3
https://github.com/mattermost/desktop.git (GITHUB):
Affected version(s) >=autoupdater__nightly-deploy_5.1.0-nightly.20220217 <v6.2.3
Fix Suggestion:
Update to version v6.2.3
Related Resources (2)
https://mattermost.com/security-updates
https://nvd.nist.gov/vuln/detail/CVE-2026-75025
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CVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.7
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Origin Validation Error
CWE-346
EPSS
Base Score:
0.15