Known Vulnerabilities for Mattermost Desktop by Mattermost

Listed below are 10 of the newest known vulnerabilities associated with "Mattermost Desktop" 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-2026-9602 json Mattermost Desktop App versions <=6.2 6.0.2 5.6.13.0 fail to validate payloads sent from the Mattermost Web App to the Deskto... Not Provided 2026-07-17 2026-07-17
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-2026-8075 json Mattermost Desktop App versions <=6.2 5.5.13 6.0.2.0 fail to properly null check when checking for headers in the Mattermost ... Not Provided 2026-07-17 2026-07-17
CVE-2026-6517 json Mattermost Desktop App versions <=6.1 5.5.13.0 fail to restrict the allow list of domains to which NTLM credentials were forw... Not Provided 2026-06-15 2026-06-15
CVE-2026-4643 json Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent server-rendered content from closing an underlying appli... Not Provided 2026-05-18 2026-05-18
CVE-2026-3471 json Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent an invalid URL from loading in a pop-up window in the Ma... Not Provided 2026-05-18 2026-05-18
CVE-2023-5920 json Mattermost Desktop for MacOS fails to utilize the secure keyboard input functionality provided by macOS, allowing for other p... 3.3 - LOW 2023-11-02 2023-11-09
CVE-2023-5876 json Mattermost fails to properly validate a RegExp built off the server URL path, allowing an attacker in control of an enrolled ... 5.3 - MEDIUM 2023-11-02 2023-11-09
CVE-2023-5875 json Mattermost Desktop fails to correctly handle permissions or prompt the user for consent on certain sensitive ones allowing m... 5.3 - MEDIUM 2023-11-02 2023-11-09
CVE-2023-5339 json Mattermost Desktop fails to set an appropriate log level during initial run after fresh installation resulting in logging a... 5.5 - MEDIUM 2023-10-17 2023-10-24
Results limited to 10 most recent vulnerabilities

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
ApplicationMattermostMattermost Desktop4.4.0
ApplicationMattermostMattermost Desktop4.3.0
ApplicationMattermostMattermost Desktop4.2.2
ApplicationMattermostMattermost Desktop4.0.0
ApplicationMattermostMattermost Desktop3.4.0

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