Auth bypass in Fleetdm Fleet
CVE-2026-23517
Fleet is open source device management software. A broken access control issue in versions prior to 4.78.3, 4.77.1, 4.76.2, 4.75.2, and 4.53.3 allowed authenticated users to access debug and profiling endpoints regardless of role. As a res…
Vulnerability class: Broken Access Control
EPSS: 0.002 (15.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
Affected products
- Fleetdm Fleet — versions >= 4.75.0, < 4.75.2, >= 4.77.0, < 4.77.1, >= 4.78.0, < 4.78.3
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-23517?
- CVE-2026-23517 is a high-severity vulnerability in Fleetdm Fleet, classified under Missing Authorization. CVSS score: 8.1/10. Published 2026-01-21.
- How severe is CVE-2026-23517?
- High severity. CVSS v3 base score is 8.1 out of 10.