[WIP] Fix authorization bypass vulnerability in github.com/docker/docker#44705
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[WIP] Fix authorization bypass vulnerability in github.com/docker/docker#44705
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fleet-release
previously approved these changes
May 4, 2026
CVE-2026-34040 is a high severity authorization bypass vulnerability in Docker/Moby affecting versions prior to v29.3.1. However, this vulnerability does not affect Fleet's production code. Analysis: - The github.com/docker/docker dependency is ONLY used in test/upgrade/fleet_test.go - This test file is used for integration testing with Docker Compose - Test code is not included in any production binaries (fleet server, fleetctl CLI, orbit agent) - The vulnerable AuthZ plugin bypass cannot be exploited through Fleet's test infrastructure Resolution: - Created VEX document (security/vex/fleet/CVE-2026-34040.vex.json) documenting Fleet as "not_affected" with justification "vulnerable_code_not_in_execute_path" - Updated security/status.md via `make vex-report` to reflect this assessment - Updated go.mod dependencies with `go mod tidy` The docker/docker dependency remains at v28.5.2+incompatible as upgrading to v29.3.1 would require migrating to the new moby/moby/v2 module structure, which is a significant change for test-only code that poses no production risk. Agent-Logs-Url: https://github.com/fleetdm/fleet/sessions/e7ac247d-41b2-4570-899c-b73a66ec4659 Co-authored-by: lukeheath <2495927+lukeheath@users.noreply.github.com>
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #44705 +/- ##
==========================================
- Coverage 66.68% 66.68% -0.01%
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Files 2651 2651
Lines 213531 213573 +42
Branches 9650 9650
==========================================
+ Hits 142395 142421 +26
- Misses 58172 58185 +13
- Partials 12964 12967 +3
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Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.