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-2026-6957 json Mattermost Plugins versions <=1.1.5 fail to sanitize filenames received from federated peers before using them to construct e... Not Provided 2026-05-27 2026-05-28
CVE-2026-6347 json Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to sanitize sensitive configuration fields i... Not Provided 2026-05-18 2026-05-18
CVE-2026-6346 json Not Provided 2026-05-18 2026-05-18
CVE-2026-6345 json Not Provided 2026-05-18 2026-05-18
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
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report