CVE-2026-23518

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...

EUVD-2026-3348

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...

CVE-2026-23518 Fleet has a JWT signature bypass vulnerability in Azure AD MDM enrollment

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...

CVE-2026-23518 Fleet has a JWT signature bypass vulnerability in Azure AD MDM enrollment

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...

CVE-2026-23518

Fleet is open source device management software. CVE-2026-23518 describes a JWT signature bypass in Fleet’s Windows MDM enrollment flow, where attacker-supplied tokens could be accepted without proper JWT verification, allowing enrollment of unauthorized devices under arbitrary Azure AD identitie...

CVE-2026-23518 Fleet has a JWT signature bypass vulnerability in Azure AD MDM enrollment

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...

CVE-2026-23517

Fleet (open source device management software) has a broken access control vulnerability in debug/pprof endpoints that allows any authenticated user, including the lowest-privilege Observer role, to access internal server diagnostics and trigger CPU-intensive profiling operations. This affects ve...

EUVD-2026-3349

Fleet is open source device management software. A broken access control issue in versions prior to 4.78.3, 4.77.1, 4.76.2, 4.75.2, and 4.53.3 allowed authenticated users to access debug and profiling endpoints regardless of role. As a result, low-privilege users could view internal server...

CVE-2026-23517 Fleet has an Access Control vulnerability in debug/pprof endpoints

Fleet is open source device management software. A broken access control issue in versions prior to 4.78.3, 4.77.1, 4.76.2, 4.75.2, and 4.53.3 allowed authenticated users to access debug and profiling endpoints regardless of role. As a result, low-privilege users could view internal server...

CVE-2026-22808 Fleet Windows MDM endpoint has a Cross-site Scripting vulnerability

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::authtoken from localStorage...

CVE-2026-22808 Fleet Windows MDM endpoint has a Cross-site Scripting vulnerability

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::authtoken from localStorage...

CVE-2026-22808

CVE-2026-22808 describes a Cross-site Scripting (XSS) vulnerability in Fleet Windows MDM endpoint (fleetdm/fleet). If Windows MDM is enabled, an unauthenticated attacker could trigger XSS to steal the Fleet administrator token (FLEET::auth_token) from localStorage, potentially enabling unauthoriz...

CVE-2026-22808 Fleet Windows MDM endpoint has a Cross-site Scripting vulnerability

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::authtoken from localStorage...

CVE-2026-22808

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::authtoken from localStorage...

EUVD-2026-3350

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::authtoken from localStorage...

Fleet cross-site scripting vulnerabilities

Fleet is an open-source device management platform that supports various operating systems and devices. It helps IT and security teams with device management, vulnerability reporting, MDM operations, etc. It’s free and flexible. Fleet has a cross-site scripting vulnerability. This vulnerability...

Fleet security vulnerabilities

Fleet is an open-source device management platform that supports various operating systems and devices. It helps IT and security teams with device management, vulnerability reporting, MDM operations, etc. It’s free and flexible. There is a security vulnerability in Fleet, which stems from imprope...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via the JWT verification process. An attacker can gain unauthorized enrollment of rogue devices by submitting a forged JWT with arbitrary identity claims, as the system fails to verify th...

GHSA-4R5R-CCR6-Q6F6 Fleet has an Access Control vulnerability in debug/pprof endpoints

Summary A broken access control issue in Fleet allowed authenticated users to access debug and profiling endpoints regardless of role. As a result, low-privilege users could view internal server diagnostics and trigger resource-intensive profiling operations. Impact Fleet’s debug/pprof endpoints...

GHSA-GFPW-JGVR-CW4J Fleet Windows MDM endpoint has a Cross-site Scripting vulnerability

Summary A cross-site scripting XSS vulnerability in Fleet’s Windows MDM authentication flow could allow an attacker to compromise a Fleet user account. In certain cases, this could lead to administrative access and the ability to perform privileged actions on managed devices. Impact If Windows MD...