CVE-2026-24899

CVE-2026-24899 affects Fleet Windows MDM enrollment. Before 4.82.0, Fleet validates JWTs with Microsoft’s multi-tenant JWKS but does not enforce aud or iss, allowing any Microsoft-signed Azure AD access token with the expected scopes to authenticate to Fleet’s MDM endpoints. If Windows MDM is ena...

CVE-2026-24899 Fleet Windows MDM Azure AD JWT Authentication Bypass

Fleet is open source device management software. Prior to version 4.82.0, a vulnerability in Fleet's Windows MDM enrollment flow allows authentication tokens from any Azure AD tenant to be accepted. Because Fleet validates JWT signatures using Microsoft's multi-tenant JWKS endpoint but does not...

CVE-2026-24899 Fleet Windows MDM Azure AD JWT Authentication Bypass

Fleet is open source device management software. Prior to version 4.82.0, a vulnerability in Fleet's Windows MDM enrollment flow allows authentication tokens from any Azure AD tenant to be accepted. Because Fleet validates JWT signatures using Microsoft's multi-tenant JWKS endpoint but does not...

EUVD-2026-30374

Fleet is open source device management software. Prior to version 4.82.0, a vulnerability in Fleet's Windows MDM enrollment flow allows authentication tokens from any Azure AD tenant to be accepted. Because Fleet validates JWT signatures using Microsoft's multi-tenant JWKS endpoint but does not...

EUVD-2026-30373

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 limitin...

CVE-2026-24000 Fleet has a rate limiting bypass via untrusted client IP headers

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 limitin...

CVE-2026-24000

Fleet is open-source device management software. A vulnerability in versions prior to 4.80.1 lets attackers spoof the client’s apparent IP by abusing unvalidated headers (X-Forwarded-For, X-Real-IP, True-Client-IP) to bypass per-IP rate limiting. This affects how Fleet determines a client’s publi...

CVE-2026-24000 Fleet has a rate limiting bypass via untrusted client IP headers

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 limitin...

CVE-2026-23998

CVE-2026-23998 affects Fleet open-source device management software, specifically the Windows MDM management endpoint. A vulnerability in the endpoint could allow requests without proper client certificate validation to be processed as trusted, enabling an attacker who knows a valid enrolled devi...

CVE-2026-23998 Fleet has a Windows MDM management endpoint authentication bypass

Fleet is open source device management software. Prior to version 4.81.0, a vulnerability in Fleet’s Windows MDM management endpoint could allow requests to be processed without proper client certificate validation. In certain circumstances, this could allow an attacker to impersonate an enrolled...

CVE-2026-23998 Fleet has a Windows MDM management endpoint authentication bypass

Fleet is open source device management software. Prior to version 4.81.0, a vulnerability in Fleet’s Windows MDM management endpoint could allow requests to be processed without proper client certificate validation. In certain circumstances, this could allow an attacker to impersonate an enrolled...

Fleet: IP spoofing allows bypassing API rate limiting

Summary A vulnerability in Fleet's IP extraction logic allows unauthenticated attackers to bypass API rate limiting by spoofing client IP headers. This may allow brute-force login attempts or other abuse against Fleet instances exposed to the public internet. Impact Fleet extracted client IP...

GHSA-MXMP-WR3W-RVQX Fleet: IP spoofing allows bypassing API rate limiting

Summary A vulnerability in Fleet's IP extraction logic allows unauthenticated attackers to bypass API rate limiting by spoofing client IP headers. This may allow brute-force login attempts or other abuse against Fleet instances exposed to the public internet. Impact Fleet extracted client IP...

GHSA-9VCR-G537-3W5V Fleet vulnerable to OS command injection in software packages

Summary A vulnerability in Fleet's software installer pipeline could allow a crafted software package to execute arbitrary commands as root macOS/Linux or SYSTEM Windows on managed endpoints when an uninstall is triggered. Impact When a software package .pkg, .deb, .rpm, .exe, or .msi is uploaded...

Fleet vulnerable to OS command injection in software packages

Summary A vulnerability in Fleet's software installer pipeline could allow a crafted software package to execute arbitrary commands as root macOS/Linux or SYSTEM Windows on managed endpoints when an uninstall is triggered. Impact When a software package .pkg, .deb, .rpm, .exe, or .msi is uploaded...

GHSA-X67P-9M2R-FXQV Fleet server may terminate unexpectedly when handling certain gRPC requests

Summary Fleet contained a denial-of-service DoS issue in the gRPC Launcher PublishLogs endpoint. In affected versions, certain unexpected input values were not handled gracefully, which could cause the Fleet server process to terminate while processing an authenticated request from an enrolled...

Fleet Windows MDM Azure AD JWT Authentication Bypass

Summary A vulnerability in Fleet's Windows MDM enrollment flow allows authentication tokens from any Azure AD tenant to be accepted. Because Fleet validates JWT signatures using Microsoft's multi-tenant JWKS endpoint but does not enforce the aud audience or iss issuer claims, any Microsoft-signed...

Fleet has a Windows MDM management endpoint authentication bypass

Summary A vulnerability in Fleet’s Windows MDM management endpoint could allow requests to be processed without proper client certificate validation. In certain circumstances, this could allow an attacker to impersonate an enrolled Windows device and retrieve sensitive configuration data. Impact...

GHSA-2RC4-7JC6-QFFH Fleet has a Windows MDM management endpoint authentication bypass

Summary A vulnerability in Fleet’s Windows MDM management endpoint could allow requests to be processed without proper client certificate validation. In certain circumstances, this could allow an attacker to impersonate an enrolled Windows device and retrieve sensitive configuration data. Impact...

CVE-2026-41050

Fleet's Helm deployer did not fully apply ServiceAccount impersonation in two code paths, allowing a tenant with git push access to a Fleet-monitored repository to read secrets from any namespace on every downstream cluster targeted by their GitRepo...