CVE-2026-22808
Fleet Windows MDM endpoint has a Cross-site Scripting vulnerability in github.com/fleetdm/fleet
EPSS 0.05%
Description
Fleet Windows MDM endpoint has a Cross-site Scripting vulnerability in github.com/fleetdm/fleet
How to fix CVE-2026-22808
To remediate CVE-2026-22808, upgrade the affected package to a fixed version below.
- Go/github.com/fleetdm/fleet—upgrade to 4.78.2 or later
- Go/github.com/fleetdm/fleet/v4—upgrade to 4.43.5-0.20260111020427-0e6c790803d1 or later
- Go/github.com/fleetdm/fleet/v4—upgrade to 4.75.2 or later
Is CVE-2026-22808 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- >= 4.78.0, < 4.78.2
- from 0, < 4.43.5-0.20260111020427-0e6c790803d1
- >= 4.75.0, < 4.75.2, >= 4.76.0, < 4.76.2, >= 4.77.0, < 4.77.1, >= 4.78.0, < 4.78.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H |