Vulnerability in Fleetdm Fleet
CVE-2026-111923
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.
Published .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/fleetdm/fleet/security/advisories/GHSA-x467-vgxf-2g6h (vendor-advisory)
- www.vulncheck.com/advisories/fleet-before-4.89.0-unauthenticated-dos-via-apple-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111923?
- CVE-2026-111923 is a high-severity vulnerability in Fleetdm Fleet, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2026-10-17.
- How severe is CVE-2026-111923?
- High severity. CVSS v3 base score is 7.5 out of 10.