{"id":"CVE-2026-24000","revision":"a5604d9758cb4dc9853dee645af991f4","records":[{"revision":"a5604d9758cb4dc9853dee645af991f4","observedAt":"2026-10-25T05:17:36.726+00:00","statement":{"source":"nvd","id":"CVE-2026-24000","aliases":[],"title":"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 spoof…","description":"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 spoof their apparent IP address and bypass per-IP rate limiting controls. Fleet determines a client’s public IP address using HTTP headers such as X-Forwarded-For, X-Real-IP, and/or True-Client-IP. These headers were trusted without validation. An attacker could supply arbitrary values in these headers, causing Fleet to treat each request as originating from a different IP address. This could allow an attacker to bypass per-IP rate limits and increase the effectiveness of brute-force or password-spraying attempts against authentication endpoints. This issue does not allow authentication bypass, privilege escalation, data exposure, or remote code execution on its own. Version 4.80.1 contains a patch. As a workaround, run Fleet behind a trusted reverse proxy or load balancer that overwrites client IP headers.","state":0,"publishedAt":"2026-05-14T20:17:01.713+00:00","modifiedAt":"2026-06-17T10:22:27.4+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":6.9,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/fleetdm/fleet/releases/tag/fleet-v4.80.1","https://github.com/fleetdm/fleet/security/advisories/GHSA-j8h8-75h3-jg53"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-24000","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-290"],"productCriteria":["cpe:2.3:a:fleetdm:fleet:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-05-14T20:17:01.713","lastModified":"2026-06-17T10:22:27.400"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-24000","identifiers":["CVE-2026-24000"]},"retained":false,"historicalAffected":[]}],"coverage":[]}