Vulnerability · Published Sep 27, 2026 · Assigned by VulnCheck
CVE-2026-101047Fleet before 4.87.0 Unauthenticated iOS App Download via Predictable URLs
Medium 5.3
In plain English
A medium-severity missing authorization in fleet from fleetdm. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Fleet before 4.87.0 does not protect the two endpoints that serve in-house iOS application packages and manifests (enterprise tier only) with the intended random, time-limited URL token. Because Apple's InstallEnterpriseApplication MDM command requires these URLs to be reachable without a Fleet session, they cannot rely on session-based authentication, and the missing token allows an unauthenticated attacker with network access to the Fleet server to download in-house IPA binaries and their metadata (bundle identifier, version, and name) by guessing sequential title identifiers. The impact is limited to read-only disclosure; there is no privilege escalation or write access, and the free tier is unaffected (it returns fleet.ErrMissingLicense).
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/fleetdm/fleet/v4 | 4.87.0 | GHSA-q9c5-pp7m-fm2g |
| Go | github.com/fleetdm/fleet/v4 | 4.87.0 | GO-2026-6268 |
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- GitHub Security Advisory (GHSA-q9c5-pp7m-fm2g) vendor-advisory
- VulnCheck Advisory: Fleet before 4.87.0 Unauthenticated iOS App Download via Predictable URLs third-party-advisory