Mattermost ↗
Summary iPlain-English security verdict for Mattermost, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
Mattermost currently scores 35/100 — high risk. No tracked vulnerabilities are currently known to be exploited in the wild. Upgrade soon — serious vulnerabilities are open and a fix usually exists.
Disclosure trend iNew CVEs published for Mattermost each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
Patch priority — what to act on iThe issues to fix first — actively exploited (CISA KEV) first, then by exploitation probability (EPSS), then severity. Each row's "→ fixed in" is the earliest version that patches it; "see advisory" means no fixed version is published.
Most urgent first — actively exploited, then likeliest to be exploited.
CVE-2019-20851 CRITICAL Path traversal EPSS 1% → fixed in 1.26.0Get alerted about Mattermost
Be emailed the moment Mattermost gets a newly exploited vulnerability (CISA KEV) or a release reaches end of life. Free · double opt-in · unsubscribe anytime.
We email only on real events for Mattermost — no marketing, no sharing, and we never know what you run. Track your whole stack →
Frequently asked
Is Mattermost safe and patched?
Mattermost currently scores 35/100 — high risk. No tracked vulnerabilities are currently known to be exploited in the wild. Upgrade soon — serious vulnerabilities are open and a fix usually exists.
What should I do about Mattermost now?
Review the patch-priority list, apply the available fixes (or move to the latest release), and confirm against Mattermost's official advisory.
lifecycle unknown — needs latest supported version
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against Mattermost's official advisory before you patch or upgrade — Mattermost official site ↗