{"id":"CVE-2026-24000","sourceIdentifier":"security-advisories@github.com","published":"2026-05-14T20:17:01.713","lastModified":"2026-10-26T14:10:00.130","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"Fleet es software de gestión de dispositivos de código abierto. Antes de la versión 4.80.1, Fleet confiaba en los encabezados de dirección IP suministrados por el cliente al determinar la IP de origen para las solicitudes entrantes. Esto permitía a los clientes autenticados y no autenticados falsificar su dirección IP aparente y omitir los controles de limitación de velocidad por IP. Fleet determina la dirección IP pública de un cliente utilizando encabezados HTTP como X-Forwarded-For, X-Real-IP y/o True-Client-IP. Estos encabezados eran de confianza sin validación. Un atacante podía suministrar valores arbitrarios en estos encabezados, haciendo que Fleet tratara cada solicitud como originada desde una dirección IP diferente. Esto podría permitir a un atacante omitir los límites de velocidad por IP y aumentar la efectividad de los intentos de fuerza bruta o de ’password spraying’ contra los puntos finales de autenticación. Este problema no permite la omisión de autenticación, la escalada de privilegios, la exposición de datos o la ejecución remota de código por sí solo. La versión 4.80.1 contiene un parche. Como solución alternativa, ejecute Fleet detrás de un proxy inverso o balanceador de carga de confianza que sobrescriba los encabezados IP del cliente."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"fleetdm","product":"fleet","versions":[{"version":"< 4.80.1","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"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","baseScore":6.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-05-14T19:41:10.742607Z","id":"CVE-2026-24000","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-290"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:fleetdm:fleet:*:*:*:*:*:*:*:*","versionEndExcluding":"4.80.1","matchCriteriaId":"A1490125-39FE-4B90-AC5F-62B26ED3C509"}]}]}],"references":[{"url":"https://github.com/fleetdm/fleet/releases/tag/fleet-v4.80.1","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/fleetdm/fleet/security/advisories/GHSA-j8h8-75h3-jg53","source":"security-advisories@github.com","tags":["Vendor Advisory"]}]}