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...

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...

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...

EUVD-2026-30368

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...

EUVD-2026-30369

Crabbox prior to v0.12.0 contains an authentication bypass vulnerability that allows non-admin shared-token callers to impersonate other owners or organizations by spoofing identity headers. Attackers can inject malicious X-Crabbox-Owner and X-Crabbox-Org headers in requests authenticated with a...

CVE-2026-8621 Crabbox < v0.12.0 Authentication Bypass via Header Spoofing

Crabbox prior to v0.12.0 contains an authentication bypass vulnerability that allows non-admin shared-token callers to impersonate other owners or organizations by spoofing identity headers. Attackers can inject malicious X-Crabbox-Owner and X-Crabbox-Org headers in requests authenticated with a...

CVE-2026-8621 Crabbox < v0.12.0 Authentication Bypass via Header Spoofing

Crabbox prior to v0.12.0 contains an authentication bypass vulnerability that allows non-admin shared-token callers to impersonate other owners or organizations by spoofing identity headers. Attackers can inject malicious X-Crabbox-Owner and X-Crabbox-Org headers in requests authenticated with a...

CVE-2026-8621

Crabbox before v0.12.0 is affected by an authentication bypass where non-admin callers using a shared token can impersonate other owners or organizations by spoofing identity headers (X-Crabbox-Owner, X-Crabbox-Org). Attackers can bypass authorization and access owner/org-scoped lease operations ...

CVE-2026-8621 Crabbox < v0.12.0 Authentication Bypass via Header Spoofing

Crabbox prior to v0.12.0 contains an authentication bypass vulnerability that allows non-admin shared-token callers to impersonate other owners or organizations by spoofing identity headers. Attackers can inject malicious X-Crabbox-Owner and X-Crabbox-Org headers in requests authenticated with a...

Authentication Bypass

s3-proxy is vulnerable to Authentication Bypass. The vulnerability is due to inconsistent URL path interpretation between the authentication middleware and bucket handler, which allows an attacker to bypass access controls and perform unauthorized operations on protected S3 objects...

CVE-2026-45371

CVE-2026-45371 (SiYuan) : Before v3.7.0, publish-mode Reader can mutate server state via 8 ungated APIs: POST /api/graph/getGraph, /getLocalGraph, /api/sync/setSyncInterval, /api/storage/updateRecentDocViewTime, /api/storage/updateRecentDocCloseTime, /api/storage/updateRecentDocOpenTime, /api/sto...

Authentication Bypass

Traefik is vulnerable to Authentication Bypass. The vulnerability is due to improper handling in the ForwardAuth middleware when trustForwardHeader=false is configured behind a trusted upstream proxy, which allows an attacker to bypass authentication controls and gain unauthorized access...

Cisco Catalyst SD-WAN Controller Auth Bypass Actively Exploited to Gain Admin Access

Cisco has released updates to address a maximum-severity authentication bypass flaw in Catalyst SD-WAN Controller that it said has been exploited in limited attacks. The vulnerability, tracked as CVE-2026-20182 , carries a CVSS score of 10.0. "A vulnerability in the peering authentication in Cisc...

Authentication Bypass

github.com/traefik/traefik is vulnerable to an authentication bypass. The vulnerability is due to improper sanitization of forwarded header alias variants using underscores instead of dashes, which allows an attacker to inject spoofed trusted headers and bypass authentication on protected routes...

org.eclipse.jetty.ee10/jetty-ee10: early return from the JASPIAuthenticator class without clearing ThreadLocal variables

A flaw was found in Eclipse Jetty. The JASPIAuthenticator class is responsible for handling authentication checks. During these checks, the class sets two ThreadLocal variables to store authentication state. Under certain conditions, the authentication process can return early without properly...

camel-http: Apache Camel: Information disclosure and authentication bypass in embedded HTTP/management servers

A flaw was found in the Apache Camel embedded HTTP server and embedded management server camel-platform-http-main. When authentication is enabled and a non-root context path is configured, the authentication handler incorrectly matches only the exact configured path, not its subpaths. This allows...

Spring Boot: Spring Boot: Authentication bypass via misconfigured Health Group additional path

A flaw was found in Spring Boot. This vulnerability, an authentication bypass, occurs when an application endpoint requiring authentication is declared under a specific path already configured for a Health Group additional path. A remote attacker could exploit this to bypass authentication,...

TanStack Start - Server Core: Inbound server-function request deserialization could invoke a sibling client-referenced server function

Summary A type-confusion bug in seroval ≤ 1.5.2 upstream advisory allowed a crafted JSON body sent to one TanStack Start server function to trigger invocation of a different client-referenced server function as a side effect of deserializing the request payload. This is not an authentication bypa...