{"api_version":"1","generated_at":"2026-05-15T21:59:57+00:00","cve":"CVE-2026-24000","urls":{"html":"https://cve.report/CVE-2026-24000","api":"https://cve.report/api/cve/CVE-2026-24000.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-24000","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-24000"},"summary":{"title":"Fleet has a rate limiting bypass via untrusted client IP headers","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. 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