Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Fleet (github.com/fleetdm/fleet/v4) versions before 4.84.2 are affected. An authenticated user with the Observer role, including Global or Team Observer, could use the labels host-listing endpoint's user-supplied sort parameter to binary-search host enrollment secrets one character at a time, exposing node_key and orbit_node_key values. Upgrade to version 4.84.2 or later. Until then, restrict the Observer role to fully trusted users and rotate keys for any suspected host.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.5 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0037, the 31st percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:06 UTC First seen by agentprime
- 31 Oct 2026, 15:06 UTC Confirmed by OSV