{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-14T22:50:19.422","vulnerabilities":[{"cve":{"id":"CVE-2026-23518","sourceIdentifier":"security-advisories@github.com","published":"2026-01-21T22:15:50.140","lastModified":"2026-02-27T16:14:59.390","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Fleet is open source device management software. In versions prior to 4.78.3, 4.77.1, 4.76.2, 4.75.2, and 4.53.3, a vulnerability in Fleet's Windows MDM enrollment flow could allow an attacker to submit forged authentication tokens that are not properly validated. Because JWT signatures were not verified, Fleet could accept attacker-controlled identity claims, enabling enrollment of unauthorized devices under arbitrary Azure AD user identities. Versions 4.78.3, 4.77.1, 4.76.2, 4.75.2, and 4.53.3 fix the issue. If an immediate upgrade is not possible, affected Fleet users should temporarily disable Windows MDM."},{"lang":"es","value":"Fleet es software de gestión de dispositivos de código abierto. En versiones anteriores a 4.78.3, 4.77.1, 4.76.2, 4.75.2 y 4.53.3, una vulnerabilidad en el flujo de inscripción de MDM de Windows de Fleet podría permitir a un atacante enviar tokens de autenticación falsificados que no se validan correctamente. Debido a que las firmas JWT no se verificaban, Fleet podría aceptar reclamaciones de identidad controladas por el atacante, permitiendo la inscripción de dispositivos no autorizados bajo identidades de usuario arbitrarias de Azure AD. Las versiones 4.78.3, 4.77.1, 4.76.2, 4.75.2 y 4.53.3 solucionan el problema. Si una actualización inmediata no es posible, los usuarios de Fleet afectados deberían deshabilitar temporalmente Windows MDM."}],"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:H/VI:H/VA:H/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":9.3,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","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:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Primary","description":[{"lang":"en","value":"CWE-347"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:fleetdm:fleet:*:*:*:*:*:*:*:*","versionEndExcluding":"4.53.3","matchCriteriaId":"58B2870D-823A-4862-A51B-B3F86C60D89B"},{"vulnerable":true,"criteria":"cpe:2.3:a:fleetdm:fleet:*:*:*:*:*:*:*:*","versionStartIncluding":"4.75.0","versionEndExcluding":"4.75.2","matchCriteriaId":"E363A7DF-0880-44B8-82A6-0192D1D43471"},{"vulnerable":true,"criteria":"cpe:2.3:a:fleetdm:fleet:*:*:*:*:*:*:*:*","versionStartIncluding":"4.76.0","versionEndExcluding":"4.76.2","matchCriteriaId":"53B5B8B6-F8C9-45E2-A160-D5834B1F3D61"},{"vulnerable":true,"criteria":"cpe:2.3:a:fleetdm:fleet:*:*:*:*:*:*:*:*","versionStartIncluding":"4.78.0","versionEndExcluding":"4.78.3","matchCriteriaId":"B8118C02-5CB2-45D3-AE6E-90313FB29720"},{"vulnerable":true,"criteria":"cpe:2.3:a:fleetdm:fleet:4.77.0:*:*:*:*:*:*:*","matchCriteriaId":"AE525B6A-8AF1-4D33-8EE9-FFD6A1C4F3F8"}]}]}],"references":[{"url":"https://github.com/fleetdm/fleet/commit/e225ef57912c8f4ac8977e24b5ebe1d9fd875257","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/fleetdm/fleet/security/advisories/GHSA-63m5-974w-448v","source":"security-advisories@github.com","tags":["Vendor Advisory"]}]}}]}