Known Vulnerabilities for Mattermost Server by Mattermost

Listed below are 10 of the newest known vulnerabilities associated with "Mattermost Server" by "Mattermost".

These CVEs are retrieved based on exact matches on listed software, hardware, and vendor information (CPE data) as well as a keyword search to ensure the newest vulnerabilities with no officially listed software information are still displayed.

Data on known vulnerable versions is also displayed based on information from known CPEs

Known Vulnerabilities

CVE Shortened Description Severity Publish Date Last Modified
CVE-2026-28759 json Not Provided 2026-05-18 2026-05-18
CVE-2026-28741 json Not Provided 2026-04-15 2026-04-22
CVE-2026-28732 json Not Provided 2026-05-18 2026-05-19
CVE-2026-27769 json Mattermost versions 10.11.x <= 10.11.12 fail to validate whether users were correctly owned by the correct Connected Workspac... Not Provided 2026-04-15 2026-04-15
CVE-2026-22880 json Mattermost Mobile Apps versions <=2.37 11.4 2.0.37 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to properly validate the SSO authenti... Not Provided 2026-05-21 2026-05-21
CVE-2026-21388 json Not Provided 2026-04-09 2026-04-25
CVE-2026-9162 json Not Provided 2026-06-22 2026-06-23
CVE-2026-8683 json Mattermost Desktop App versions <=6.1 5.5.13.0 fail to account for attempting to open extremely long URLs in the Mattermost D... Not Provided 2026-06-15 2026-06-15
CVE-2026-8074 json Not Provided 2026-06-22 2026-06-23
CVE-2026-7387 json Not Provided 2026-06-12 2026-06-18
Results limited to 10 most recent vulnerabilities

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationMattermostMattermost Server5.9.8
ApplicationMattermostMattermost Server5.9.8
ApplicationMattermostMattermost Server5.9.7
ApplicationMattermostMattermost Server5.9.7
ApplicationMattermostMattermost Server5.9.6
ApplicationMattermostMattermost Server5.9.6
ApplicationMattermostMattermost Server5.9.5
ApplicationMattermostMattermost Server5.9.5
ApplicationMattermostMattermost Server5.9.4
ApplicationMattermostMattermost Server5.9.4
ApplicationMattermostMattermost Server5.9.3
ApplicationMattermostMattermost Server5.9.3
ApplicationMattermostMattermost Server5.9.2
ApplicationMattermostMattermost Server5.9.2
ApplicationMattermostMattermost Server5.9.1
ApplicationMattermostMattermost Server5.9.1
ApplicationMattermostMattermost Server5.9.0
ApplicationMattermostMattermost Server5.9.0
ApplicationMattermostMattermost Server5.9.0
ApplicationMattermostMattermost Server5.9.0
Results limited to 20 most recent known configurations
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