CVE-2026-1046 describes a critical vulnerability in Mattermost Desktop App versions 6.0, 6.2.0, and 5.2.13.0, where insufficient validation of help links allows a malicious Mattermost server to execute arbitrary executables on a user's system if they click on specific Help menu items. This vulnerability carries a high CVSS score of 7.6, indicating a network-based attack with low complexity requiring user interaction, potentially leading to high confidentiality impact. Despite its severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 0, <= 5.2.13CPE match | cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:* | ||
>= 0, <= 6.2.0CPE match | cpe:2.3:a:mattermost:mattermost:*:*:*:*:*:*:*:* | ||
>= 5.13.2, < 5.13.3CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:* | ||
>= 6.0.0, < 6.0.3CPE matchmatch criteria | cpe:2.3:a:mattermost:mattermost_desktop:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:L
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.