Fleet: Unauthenticated download of in-house iOS app binaries via predictable URLs
### Summary Two endpoints serving in-house iOS application packages and manifests in Fleet's enterprise tier are reachable without a hard-to-guess token in the URL, allowing an unauthenticated attacker who can reach the Fleet server to download an in-house IPA by guessing sequential title identifiers. ### Impact By design, Apple's `InstallEnterpriseApplication` MDM command requires that the manifest URL be reachable by the managed device without a Fleet session, so these endpoints cannot enforce session-based authentication. Fleet's legacy MDM installer path mitigates this by embedding a random, hard-to-guess token in the URL; the in-house iOS app endpoints (added later) were always intended to use the same time-limited-token pattern but the mitigation was not yet in place. The result is read-only disclosure of in-house IPA binaries and their metadata (bundle identifier, version, name) that an operator has deployed through Fleet. This is enterprise-tier only — the free tier returns `fleet.ErrMissingLicense`. There is no privilege escalation, write access, or impact on hosts not managed by Fleet. ### Workarounds If an immediate upgrade is not possible: - Restrict network access to the Fleet server to trusted networks, as is typical for MDM deployments. - Remove in-house iOS apps that contain sensitive material from Fleet; in-house app IPAs are intentionally reachable by managed devices and should not be relied on as a confidential distribution channel. - Where available, confi
GHSA-q9c5-pp7m-fm2g
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:GHSA-q9c5-pp7m-fm2g
github.com/fleetdm/fleet/v4
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 4.87.0
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.87.0"
}
]
}
],
"package": {
"name": "github.com/fleetdm/fleet/v4",
"purl": "pkg:golang/github.com/fleetdm/fleet/v4",
"ecosystem": "Go"
},
"database_specific": {
"source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-q9c5-pp7m-fm2g/GHSA-q9c5-pp7m-fm2g.json"
}
}
]- Related CVEs
- CVE-2026-101047
Source reference:
/aliases
Publisher severity
No explicit severity was provided.
- Event
- #21141 · Revision 1
- Added to Heist Feed
- Publisher date
GO-2026-6268
Revision 1
Fleet: Unauthenticated download of in-house iOS app binaries via predictable URLs in github.com/fleetdm/fleet
Fleet: Unauthenticated download of in-house iOS app binaries via predictable URLs in github.com/fleetdm/fleet
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:GO-2026-6268
github.com/fleetdm/fleet/v4
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 4.87.0
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.87.0"
}
]
}
],
"package": {
"name": "github.com/fleetdm/fleet/v4",
"purl": "pkg:golang/github.com/fleetdm/fleet/v4",
"ecosystem": "Go"
},
"database_specific": {
"source": "https://vuln.go.dev/ID/GO-2026-6268.json"
},
"ecosystem_specific": {}
}
]- Related CVEs
- CVE-2026-101047
Source reference:
/aliases
Publisher severity
No explicit severity was provided.
- Event
- #21142 · Revision 1
- Added to Heist Feed
- Publisher date