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EPSS
| CVE | CVSS | EPSS | Vendor, product | Description | Modified |
|---|---|---|---|---|---|
| CVE-2025-58084 | 6.5 medium | 0.00% | mattermost, mattermost_desktop | Mattermost Desktop App versions <= 5.13.0 fail to validate URLs external to the configured Mattermost servers, allowing an attacker on a server the user has configured to crash the user's application by sending the user a malformed URL. | 19 Oct |
| CVE-2026-1046 | 6.5 medium | 0.00% | mattermost, mattermost_desktop | Mattermost Desktop App versions <=6.0 6.2.0 5.2.13.0 fail to validate help links which allows a malicious Mattermost server to execute arbitrary executables on a user’s system via the user clicking on certain items in the Help menu Mattermost Advisory ID: MMSA-2026-00577 | 15 Oct |
| CVE-2026-9602 | 6.5 medium | 0.00% | mattermost, mattermost_desktop | 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 Desktop App which allows a malicious server owner to crash the Mattermost Desktop App via changing the payload of a method to a malformed one. Mattermost Advisory ID: MMSA-2026-00678 | 15 Oct |
| CVE-2026-8075 | 6.5 medium | 0.00% | mattermost, mattermost_desktop | 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 Desktop App which allows any user to crash another channel members Desktop App via posting a malicious link with an embedded image that misses one of those headers. Mattermost Advisory ID: MMSA-2026-00668 | 15 Oct |
| CVE-2025-55035 | 6.1 medium | 0.00% | mattermost, mattermost_desktop | Mattermost Desktop App versions <=5.13.0 fail to manage modals in the Mattermost Desktop App that stops a user with a server that uses basic authentication from accessing their server which allows an attacker that provides a malicious server to the user to deny use of the Desktop App via having the user configure the malicious server and forcing a modal popup that cannot be closed. | 19 Oct |
| CVE-2026-75025 | 4.7 medium | 0.00% | mattermost, mattermost_desktop | 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 | 13 Oct |
| CVE-2025-13326 | 3.9 low | 0.00% | mattermost, mattermost_desktop | Mattermost Desktop App versions <6.0.0 fail to enable the Hardened Runtime on the Mattermost Desktop App when packaged for Mac App Store which allows an attacker to inherit TCC permissions via copying the binary to a tmp folder. | 13 Oct |
| CVE-2026-12284 | 3.7 low | 0.00% | mattermost, mattermost_desktop | Mattermost Desktop App versions <=6.2 6.2.2.0 fails to validate the IPC sender in the leaveCall handler which allows a malicious or compromised Mattermost server (or a user with script access to a connected server view) to disconnect an active call belonging to a different connected server via the desktopAPI.leaveCall IPC message. Mattermost Advisory ID: MMSA-2026-00699 | 13 Oct |
| CVE-2025-13321 | 3.3 low | 0.00% | mattermost, mattermost_desktop | Mattermost Desktop App versions <6.0.0 fail to sanitize sensitive information from Mattermost logs and clear data on server deletion which allows an attacker with access to the users system to gain access to potentially sensitive information via reading the application logs. | 13 Oct |
| CVE-2026-75588 | 2.6 low | 0.00% | mattermost, mattermost_desktop | Mattermost Desktop App versions <=6.2 6.2.2.0 fail to validate the URL scheme when checking whether a target URL is internal to the connected server, which allows a network-positioned attacker to load a plugin popout window over an insecure connection via a link using a downgraded URL scheme. Mattermost Advisory ID: MMSA-2026-00717 | 13 Oct |
10 of 10
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EPSS scores: 2026-10-29. NVD cursor: 2026-10-29 00:22. The News page shows only notable CVEs (KEV, your stack, new criticals, EPSS over 50%, or active exploitation per SSVC); this table has all of them.