What is CVE-2026-24000?

CVE-2026-24000 is a medium-severity vulnerability in Fleetdm Fleet, classified under Authentication Bypass by Spoofing. CVSS score: 5.3/10. Published 2026-05-14.

How severe is CVE-2026-24000?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Fleetdm Fleet

CVE-2026-24000

Fleet is open source device management software. Prior to version 4.80.1, Fleet trusted client-supplied IP address headers when determining the source IP for incoming requests. This allowed authenticated and unauthenticated clients to spoo…

EPSS: 0.001 (26.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Fleetdm Fleet — versions < 4.80.1

Weakness classification (CWE)

CWE-290 — Authentication Bypass by Spoofing

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-24000?: CVE-2026-24000 is a medium-severity vulnerability in Fleetdm Fleet, classified under Authentication Bypass by Spoofing. CVSS score: 5.3/10. Published 2026-05-14.
How severe is CVE-2026-24000?: Medium severity. CVSS v3 base score is 5.3 out of 10.