CVE-2026-41262 Fleet: Cross-Team Policy Data Exposure via Global Policy Read Endpoint
Authenticated users can read other teams' policy details by bypassing team isolation checks in the global policy read endpoint.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-41262?
CVE-2026-41262 is a medium-severity missing authorization vulnerability in fleetdm fleet, published on 26 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Fleet is an open-source device management platform built on osquery. In versions prior to 4.85.0, the global policy read endpoint (GET /api/latest/fleet/policies/{policy_id}) fails to verify team ownership of the requested policy, allowing an authenticated user with observer-level access on any single team to read the full details of policies belonging to any other team and bypass Fleet's team isolation model. The handler authorizes the request against an empty policy object whose TeamID is nil, which an authorization rule permits for any user holding a role on any team, and then fetches the policy by ID with no team filter and returns it without any post-fetch scope check. Because policy IDs are sequential integers, an attacker can enumerate them to read other teams' policy SQL queries, host pass and fail counts, and associated software-installer and script metadata, exposing security-monitoring strategies and compliance posture across team boundaries. This issue is fixed in version 4.85.0.
Weakness: CWE-863
Which versions are affected by CVE-2026-41262?
3 open source packages ship an affected version, including github.com/fleetdm/fleet/v4.
| Package | Affected | Fixed in |
|---|---|---|
github.com/fleetdm/fleet/v4 Go | All versions | 4.85.0 |
github.com/fleetdm/fleet/v4 Go | All versions | 4.85.0 |
github.com/fleetdm/fleet/v4 Go | All versions | 4.85.0 |
How do I fix CVE-2026-41262?
Upgrade github.com/fleetdm/fleet/v4 to 4.85.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-41262 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41262 exists.
Sources
Also known as GHSA-gm7f-v959-fr2g, GO-2026-5812.