FKIE_CVE-2026-22808

Vulnerability from fkie_nvd - Published: 2026-01-21 22:15 - Updated: 2026-02-18 15:31
Severity ?
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Summary
fleetdm/fleet is open source device management software. Prior to versions 4.78.2, 4.77.1, 4.76.2, 4.75.2, and 4.53.3, if Windows MDM is enabled, an unauthenticated attacker can exploit this XSS vulnerability to steal a Fleet administrator's authentication token (FLEET::auth_token) from localStorage. This could allow unauthorized access to Fleet, including administrative access, visibility into device data, and modification of configuration. Versions 4.78.2, 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.
References
security-advisories@github.comhttps://github.com/fleetdm/fleet/security/advisories/GHSA-gfpw-jgvr-cw4jVendor Advisory
Impacted products
Vendor Product Version
fleetdm fleet *
fleetdm fleet *
fleetdm fleet *
fleetdm fleet *
fleetdm fleet 4.77.0
To clipboard 

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  "cveTags": [],
  "descriptions": [
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      "value": "fleetdm/fleet is open source device management software. Prior to versions 4.78.2, 4.77.1, 4.76.2, 4.75.2, and 4.53.3, if Windows MDM is enabled, an unauthenticated attacker can exploit this XSS vulnerability to steal a Fleet administrator\u0027s authentication token (FLEET::auth_token) from localStorage. This could allow unauthorized access to Fleet, including administrative access, visibility into device data, and modification of configuration. Versions 4.78.2, 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."
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      "value": "fleetdm/fleet es software de gesti\u00f3n de dispositivos de c\u00f3digo abierto. Antes de las versiones 4.78.2, 4.77.1, 4.76.2, 4.75.2 y 4.53.3, si Windows MDM est\u00e1 habilitado, un atacante no autenticado puede explotar esta vulnerabilidad XSS para robar el token de autenticaci\u00f3n de un administrador de Fleet (FLEET::auth_token) de localStorage. Esto podr\u00eda permitir el acceso no autorizado a Fleet, incluyendo acceso administrativo, visibilidad de los datos del dispositivo y modificaci\u00f3n de la configuraci\u00f3n. Las versiones 4.78.2, 4.77.1, 4.76.2, 4.75.2 y 4.53.3 solucionan el problema. Si una actualizaci\u00f3n inmediata no es posible, los usuarios de Fleet afectados deber\u00edan deshabilitar temporalmente Windows MDM."
    }
  ],
  "id": "CVE-2026-22808",
  "lastModified": "2026-02-18T15:31:03.587",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
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        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
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    "cvssMetricV40": [
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        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "HIGH",
          "subIntegrityImpact": "HIGH",
          "userInteraction": "PASSIVE",
          "valueDensity": "NOT_DEFINED",
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          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
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        "type": "Secondary"
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  "published": "2026-01-21T22:15:49.233",
  "references": [
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      "source": "security-advisories@github.com",
      "tags": [
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          "value": "CWE-79"
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}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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