GHSA-V895-833R-8C45
Vulnerability from github – Published: 2026-03-30 19:17 – Updated: 2026-03-30 19:17Summary
A critical second-order SQL Injection vulnerability in Fleet's Apple MDM profile delivery pipeline could allow an attacker with a valid MDM enrollment certificate to exfiltrate or modify the contents of the Fleet database, including user credentials, API tokens, and device enrollment secrets.
Impact
If Apple MDM is enabled, an attacker controlling an enrolled device can send a malicious UDID during the MDM Authenticate check-in. The UDID is stored safely via parameterized queries, but is later interpolated directly into SQL when the async worker processes the job. This enables blind, boolean-based, and UNION-based SQL injection across four simultaneous subqueries.
Because Fleet's database driver is configured with multiStatements=true, the attacker can also execute stacked queries, enabling arbitrary writes to the database. This includes inserting new admin accounts, modifying configuration, deploying malicious profiles or scripts to managed devices, and deleting data.
Exploitation requires a valid SCEP-issued enrollment certificate (mTLS), but any enrolled device, including attacker-controlled devices, can exploit this vulnerability.
This issue does not affect instances where Apple MDM is disabled.
Workarounds
If an immediate upgrade is not possible, affected Fleet users should temporarily disable Apple MDM.
For more information
If there are any questions or comments about this advisory:
Send an email to security@fleetdm.com
Join #fleet in [osquery Slack](https://join.slack.com/t/osquery/shared_invite/zt-h29zm0gk-s2DBtGUTW4CFel0f0IjTEw)
Credits
Fleet thanks@secfox-ai for responsibly reporting this issue.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/fleetdm/fleet/v4"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.81.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-34385"
],
"database_specific": {
"cwe_ids": [
"CWE-89"
],
"github_reviewed": true,
"github_reviewed_at": "2026-03-30T19:17:11Z",
"nvd_published_at": "2026-03-27T19:16:43Z",
"severity": "MODERATE"
},
"details": "### Summary\n\nA critical second-order SQL Injection vulnerability in Fleet\u0027s Apple MDM profile delivery pipeline could allow an attacker with a valid MDM enrollment certificate to exfiltrate or modify the contents of the Fleet database, including user credentials, API tokens, and device enrollment secrets.\n\n### Impact\n\nIf Apple MDM is enabled, an attacker controlling an enrolled device can send a malicious UDID during the MDM Authenticate check-in. The UDID is stored safely via parameterized queries, but is later interpolated directly into SQL when the async worker processes the job. This enables blind, boolean-based, and UNION-based SQL injection across four simultaneous subqueries.\n\nBecause Fleet\u0027s database driver is configured with `multiStatements=true`, the attacker can also execute stacked queries, enabling arbitrary writes to the database. This includes inserting new admin accounts, modifying configuration, deploying malicious profiles or scripts to managed devices, and deleting data.\n\nExploitation requires a valid SCEP-issued enrollment certificate (mTLS), but any enrolled device, including attacker-controlled devices, can exploit this vulnerability.\n\nThis issue does not affect instances where Apple MDM is disabled.\n\n### Workarounds\n\nIf an immediate upgrade is not possible, affected Fleet users should temporarily disable Apple MDM.\n\n### For more information\n\nIf there are any questions or comments about this advisory:\n\nSend an email to [security@fleetdm.com](mailto:security@fleetdm.com)\n\nJoin #fleet in [[osquery Slack](https://join.slack.com/t/osquery/shared_invite/zt-h29zm0gk-s2DBtGUTW4CFel0f0IjTEw)](https://join.slack.com/t/osquery/shared_invite/zt-h29zm0gk-s2DBtGUTW4CFel0f0IjTEw)\n\n### Credits\n\nFleet thanks@secfox-ai for responsibly reporting this issue.",
"id": "GHSA-v895-833r-8c45",
"modified": "2026-03-30T19:17:11Z",
"published": "2026-03-30T19:17:11Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/fleetdm/fleet/security/advisories/GHSA-v895-833r-8c45"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34385"
},
{
"type": "PACKAGE",
"url": "https://github.com/fleetdm/fleet"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U",
"type": "CVSS_V4"
}
],
"summary": "Fleet\u0027s Apple MDM profile delivery has second-order SQL Injection that can compromise the database"
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.