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-2026-28741 json Not Provided 2026-04-15 2026-04-22
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-2026-3590 json Not Provided 2026-04-15 2026-04-22
CVE-2026-3115 json Not Provided 2026-03-26 2026-03-30
CVE-2026-3114 json Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to validate decompressed a... Not Provided 2026-03-26 2026-03-26
CVE-2026-3113 json Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to set permissions on down... Not Provided 2026-03-26 2026-03-26
CVE-2026-3112 json Not Provided 2026-03-26 2026-03-30
CVE-2026-3108 json Not Provided 2026-03-26 2026-03-30
CVE-2023-27266 json Mattermost fails to honor the ShowEmailAddress setting when constructing a response to the /api/v4/users/me/teams API endpoin... 2.7 - LOW 2023-02-27 2023-11-07
CVE-2023-27265 json Mattermost fails to honor the ShowEmailAddress setting when constructing a response to the "Regenerate Invite Id" API endpoin... 2.7 - LOW 2023-02-27 2023-11-07
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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