Fleet before 4.89.0 Information Disclosure via MDM Command Results (CVE-2026-103265) | HOL Guard CVE

Medium · CVSS 5.3CVE-2026-103265

Fleet before 4.89.0 Information Disclosure via MDM Command Results

Answer in brief

CVE-2026-103265 records a Medium severity (CVSS 5.3) vulnerability in Fleet before 4.89.0 Information Disclosure via MDM Command Results. The current sources do not mark it as known exploited. The current feed maps fleetdm/fleet (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 1, 2026Updated Oct 1, 2026Source checked Oct 1, 2026First seen by HOL Oct 1, 2026Material review Oct 1, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.3
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 5.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps fleetdm/fleet (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
fleetdm/fleetgeneric	>=0 <4.89.0	4.89.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for fleetdm/fleet.
Review the reported fix. Update fleetdm/fleet to 4.89.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 1, 2026

Sources and claim methodology

Upstream source description

Fleet versions before 4.89.0 fail to properly filter MDM command results by team authorization in the commands/results endpoint. Team-scoped users can read MDM command results for hosts on other teams when a shared command UUID targets hosts across multiple teams, exposing host UUIDs, command payloads, and device responses.

Quoted source text, attributed separately from HOL analysis.