CVE-2026-111923GHSA-x467-vgxf-2g6h
Fleet before 4.89.0 Unauthenticated DoS via Apple MDM Enrollment Plist Parsing
fleetdm fleet
CVSS
8.7HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.36%Chance of exploitation activity in the next 30 days, higher than 28% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 4.89.0fleetCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
Fleet before 4.89.0 contains an unbounded recursion vulnerability in Apple MDM enrollment property list parsing that allows unauthenticated attackers to crash the server. Attackers can send a crafted binary plist payload of about 150 bytes to the enrollment endpoints, triggering exponential allocation or infinite recursion that exhausts CPU and memory.
Text from CVE List
Affected versions 2
- fleetaffected: all versions before 4.89.0CVE List
- fleetunaffected: 4.89.0CVE List