Fleet before 4.87.0 Unauthenticated iOS App Download via Predictable URLs
Published Sep 27, 2026
6.9
MEDIUMCVSS 4.0
EPSS 0.24%
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 products
-
- Version 0StatusaffectedConstraints<4.87.0
- Version 4.87.0StatusunaffectedConstraints-
- Version
No data.
No data.
No Red Hat product state for this CVE.
github.com/fleetdm/fleet/v4
Go
Introduced 0 Fixed 4.87.0
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | github.com/fleetdm/fleet/v4 | 0 | 4.87.0 |
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Sep 30, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Not enough EPSS history yet for a chart. At least two recorded scores are needed.
Percentile over time
Not enough EPSS history yet for a chart. At least two recorded scores are needed.
References (2)
- https://github.com/fleetdm/fleet/security/advisories/GHSA-q9c5-pp7m-fm2g vendor-advisory
- https://www.vulncheck.com/advisories/fleet-before-4.87.0-unauthenticated-ios-app-download-via-predictable-urls third-party-advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/fleetdm/fleet/security/advisories/GHSA-q9c5-pp7m-fm2g | vendor-advisory | |
| https://www.vulncheck.com/advisories/fleet-before-4.87.0-unauthenticated-ios-app-download-via-predictable-urls | third-party-advisory |
Change history (0)
No recorded changes yet.