CVE-2026-34386: Fleet vulnerable to SQL injection in MDM bootstrap package by authenticated team or global admin
Summary
A SQL Injection vulnerability in Fleet's MDM bootstrap package configuration allows an authenticated user with Team Admin or Global Admin privileges to modify arbitrary team configurations, exfiltrate sensitive data from the Fleet database, and inject arbitrary content into team configs via direct API calls.
Impact
An authenticated user with Team Admin or Global Admin role can exploit a flaw in how user-supplied input is handled during MDM bootstrap package configuration. Insufficient server-side input validation allows crafted input to manipulate database queries in unintended ways.
Successful exploitation could enable cross-team data corruption, exfiltration of sensitive information such as password hashes and API tokens, and potential privilege escalation. Exploitation requires authentication with team or global admin privileges and MDM to be enabled.
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 or limit admin roles.
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
Credits
Fleet thanks the Secfox Research Team (@secfox-ai) for responsibly reporting this issue.
Other sources
Fleet is open source device management software. Prior to 4.81.0, a SQL injection vulnerability in Fleet's MDM bootstrap package configuration allows an authenticated user with Team Admin or Global Admin privileges to modify arbitrary team configurations, exfiltrate sensitive data from the Fleet database, and inject arbitrary content into team configs via direct API calls. Version 4.81.0 patches the issue.
— NVD
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-34386?
CVE-2026-34386 is a high severity SQL Injection vulnerability affecting Fleet's MDM bootstrap package.
How do I fix CVE-2026-34386?
To fix CVE-2026-34386, you should upgrade to Fleet version 4.81.0 or later.
Who is affected by CVE-2026-34386?
CVE-2026-34386 affects authenticated users with Team Admin or Global Admin privileges in Fleet.
What type of vulnerability is CVE-2026-34386?
CVE-2026-34386 is classified as a SQL Injection vulnerability.
Can CVE-2026-34386 be exploited remotely?
CVE-2026-34386 requires authenticated access, so it cannot be exploited remotely without proper credentials.