{"id":"EUVD-2026-30373","revision":"a4189c37613542c2aa4c11aadf825981","records":[{"revision":"a4189c37613542c2aa4c11aadf825981","observedAt":"2026-10-28T02:05:54.941+00:00","statement":{"source":"euvd","id":"EUVD-2026-30373","aliases":["CVE-2026-24000","GHSA-j8h8-75h3-jg53"],"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":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","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","score":6.9,"severity":null}],"references":["https://github.com/fleetdm/fleet/security/advisories/GHSA-j8h8-75h3-jg53","https://github.com/fleetdm/fleet/releases/tag/fleet-v4.80.1"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-30373","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"May 14, 2026, 6:56:39 PM","dateUpdated":"May 14, 2026, 7:41:20 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-30373","identifiers":["EUVD-2026-30373","CVE-2026-24000","GHSA-j8h8-75h3-jg53"]},"retained":false,"historicalAffected":[]}],"coverage":[]}