Vendor
high
advisory
Mattermost Security Update for CVE-2026-9816
1 CVEMattermost has released critical security patches for multiple versions to address vulnerabilities tracked under CVE-2026-9816.
Mattermost +2
vulnerability-management
security-advisory
patch-management
1c
medium
advisory
Multiple Vulnerabilities in Mattermost Products
2 rulesMultiple unspecified vulnerabilities in Mattermost Desktop App and Mattermost Server allow an attacker to cause an unspecified security issue.
Mattermost Desktop App +4
mattermost
vulnerability
unspecified
2r
medium
advisory
Potential Masquerading as Communication Apps
2 rules 3 TTPsAttackers may attempt to evade defenses by masquerading malicious processes as legitimate communication applications such as Slack, WebEx, Teams, Discord, RocketChat, Mattermost, WhatsApp, Zoom, Outlook and Thunderbird.
Slack +9
defense-evasion
masquerading
windows
2r
3t