CVE-2026-26191
critical
CVSS v3
9.8
CVSS v2
—
VIR risk
9.8
Description
Fleet vulnerable to OS command injection in software packages
Predictions
Exploit likelihood
97%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: security-advisories@github.com — https://github.com/fleetdm/fleet/security/advisories/GHSA-9vcr-g537-3w5v
Vendor advisory: security-advisories@github.com — https://github.com/fleetdm/fleet/releases/tag/fleet-v4.81.1
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/fleetdm/fleet/v4 | <4.81.1 | 4.81.1 |
| GO | github.com/fleetdm/fleet/v4 | < 4.81.1 | 4.81.1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| fleetdm | fleet | {"endExcluding":"4.81.0"} | 4.81.0 |
References
CWEs
CWE-78
Verify integrity in audit chain (admin only). AS-IS.