Description
Fleet is open source device management software. A broken access control issue in versions prior to 4.78.3, 4.77.1, 4.76.2, 4.75.2, and 4.53.3 allowed authenticated users to access debug and profiling endpoints regardless of role. As a result, low-privilege users could view internal server diagnostics and trigger resource-intensive profiling operations. Fleet’s debug/pprof endpoints are accessible to any authenticated user regardless of role, including the lowest-privilege “Observer” role. This allows low-privilege users to access sensitive server internals, including runtime profiling data and in-memory application state, and to trigger CPU-intensive profiling operations that could lead to denial of service. Versions 4.78.3, 4.77.1, 4.76.2, 4.75.2, and 4.53.3 fix the issue. If an immediate upgrade is not possible, users should put the debug/pprof endpoints behind an IP allowlist as a workaround.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| fleetdm | fleet | >= 4.78.0, < 4.78.3, >= 4.77.0, < 4.77.1, >= 4.76.0, < 4.76.2, >= 4.75.0, < 4.75.2, < 4.53.3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
| openSUSE Leap 15.6 | govulncheck-vulndb | 0.0.20260205T172317-150000.1.146.1 | SUSE-SU-2026:0403-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/fleetdm/fleet | >= 4.78.0, < 4.78.3 | 4.78.3 | GHSA-4r5r-ccr6-q6f6 |
| Go | github.com/fleetdm/fleet | >= 4.77.0, < 4.77.1 | 4.77.1 | GHSA-4r5r-ccr6-q6f6 |
| Go | github.com/fleetdm/fleet | >= 4.76.0, < 4.76.2 | 4.76.2 | GHSA-4r5r-ccr6-q6f6 |
| Go | github.com/fleetdm/fleet | >= 4.75.0, < 4.75.2 | 4.75.2 | GHSA-4r5r-ccr6-q6f6 |
| Go | github.com/fleetdm/fleet/v4 | < 4.78.3-0.20260112221730-5c030e32a3a9 | 4.78.3-0.20260112221730-5c030e32a3a9 | GHSA-4r5r-ccr6-q6f6 |
| Go | github.com/fleetdm/fleet/v4 | >= 4.75.0, < 4.75.2 · >= 4.76.0, < 4.76.2 · >= 4.77.0, < 4.77.1 · >= 4.78.0, < 4.78.3 | 4.75.2, 4.76.2, 4.77.1, 4.78.3 | GO-2026-4334 |
Advisories 2
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
- SUSE-SU-2026:0403-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Mar 23, 2026