Weakness (CWE)
CWE-287: Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
How to prevent it (1 mitigation)
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Architecture and Design
Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
Source: MITRE CWE-287
188 results · Clear filters · Feed
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Critical 9.4CVE-2026-53595 Public exploit
FreeScout vulnerable to anonymous account takeover via /user-setup empty invite_hash on MySQL
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.224, the public endpoint `POST /user-setup/{hash}/{invite_sent_at}` (`OpenController@userSetupSave`) selects the target account solely by its `invite_hash`…
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High 8.2CVE-2026-50338 Public exploit
Azure Spring Apps Elevation of Privilege Vulnerability
Improper authentication in Azure Spring Apps allows an authorized attacker to elevate privileges over a network.
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High 8.8
LiteLLM: MCP Authentication Bypass via OAuth2 Passthrough Fallback
LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.84.0, LiteLLM's MCP Streamable HTTP endpoint allowed an unauthenticated attacker to use a fabricated Authorization header to trigger an OAuth2 passthrough fallbac…
KEV Sep 2, 2026 -
Critical 9.8CVE-2026-53913 Public exploit
Apache Camel Keycloak: KeycloakSecurityPolicy verifies the bearer access token only inside its role and permission checks, so in the default configuration the token is never verified and any non-null bearer value is accepted
Improper Authentication, Missing Authentication for Critical Function, Not Failing Securely ('Failing Open') vulnerability in Apache Camel Keycloak Component. The KeycloakSecurityPolicy of camel-keycloak guards a route by running KeycloakSecurityProcessor.bef…
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Critical 9.8CVE-2026-11387 Public exploit
SMS Alert <= 3.9.5 - Unauthenticated Privilege Escalation via Arbitrary Password Reset
The SMS Alert – SMS & OTP for WooCommerce, Order Notifications & Abandoned Cart Recovery plugin for WordPress is vulnerable to privilege escalation via account takeover in all versions up to, and including, 3.9.5. This is due to the plugin not properly valida…
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Critical 10.0
Kestra: Unauthenticated Remote Code Execution via Authentication Bypass in `AuthenticationFilter`
Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in Kestra OSS uses request.getPath().endsWith("/configs") to whitelist the public configuration endpoint from Basic Auth. Because the check is a su…
KEV Sep 2, 2026 -
Critical 9.0CVE-2026-11374 Public exploit
Account Takeover via Predictable SSO Ticket Generation
In ManageEngine ADSelfService Plus, RecoveryManager Plus, M365 Manager Plus, and ADAudit Plus, the SSO tickets generated to authenticate that session could be predicted by an unauthenticated user, leading to account takeover.
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Critical 9.8CVE-2026-48611 Public exploit
Improper authentication checks in the OAuth implementation allow account hijacking even when OAuth is not configured or…
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Critical 9.3
User Authentication Bypass in VPN Remote Access and Mobile Access
A logic flow weakness in Remote Access and Mobile Access certificate validation in deprecated IKEv1 key exchange allows an unauthenticated remote attacker to bypass user authentication and establish a remote access VPN connection without a valid user password.
KEV Jun 8, 2026 -
Critical 9.8CVE-2026-6274 Public exploit
Authentication Bypass in DTS Electronics' Redline WR3200
Improper Authentication, Missing authentication for critical function, Weak Authentication vulnerability in DTS Electronics Industry and Trade Ltd. Co. Redline WR3200 allows Accessing Functionality Not Properly Constrained by ACLs. This issue affects Redline …
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Critical 9.8CVE-2026-5076 Public exploit
ARMember Premium <= 7.3.1 - Insecure Password Reset Mechanism to Unauthenticated Privilege Escalation
The ARMember Premium plugin for WordPress is vulnerable to an insecure password reset mechanism in all versions up to, and including, 7.3.1. The plugin stores a plaintext copy of the password reset key in the `arm_reset_password_key` user meta field when a us…
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High 7.3CVE-2026-10288 Public exploit
code-projects Hotel and Tourism Reservation System Admin Login login.php password_verify improper authentication
A vulnerability was identified in code-projects Hotel and Tourism Reservation System 1.0. This issue affects the function password_verify of the file /admin/login.php of the component Admin Login. Such manipulation of the argument Password leads to improper a…
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High 8.1CVE-2026-45156 Public exploit
Nextcloud: Authentication Bypass in ID4me handling via Missing JWT Signature Verification in User OIDC
Nextcloud is an open source content collaboration platform. From versions 0.3.0 to before 3.1.0, 5.0.0 to before 5.1.0, and 6.0.0 to before 6.4.0, a missing signature verification in User OIDC allowed a malicious ID4me authority to identify as any user. This …
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High 7.3CVE-2026-10243 Public exploit
code-projects Smart Parking System Admin Endpoint missing authentication
A security vulnerability has been detected in code-projects Smart Parking System 1.0. Affected is an unknown function of the component Admin Endpoint. Such manipulation leads to missing authentication. It is possible to launch the attack remotely. The exploit…
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Critical 9.8
Vulnerability in the Oracle Payments product of Oracle E-Business Suite (component: File Transmission). Supported versi…
KEV Jul 15, 2026 -
Critical 9.1CVE-2026-9090 Public exploit
CVE-2026-9090
Casdoor versions 2.362.0 and earlier contain a vulnerability that allows an attacker to bypass authentication by supplying an arbitrary signing certificate. The buildSpCertificateStore function extracts the X.509 certificate directly from the incoming SAMLRes…
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Critical 10.0
Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability
May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and fixed after the was disclosed in February 2026. This new advisory is for a new vulnerability in the control connection handshaking. The secti…
KEV May 14, 2026 -
Critical 9.8
Burst Statistics 3.4.0 - 3.4.1.1 - Authentication Bypass to Admin Account Takeover
The Burst Statistics – Privacy-Friendly WordPress Analytics (Google Analytics Alternative) plugin for WordPress is vulnerable to Authentication Bypass in versions 3.4.0 to 3.4.1.1. This is due to incorrect return-value handling in the `is_mainwp_authenticated…
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Critical 9.1CVE-2026-44351 Public exploit
fast-jwt: Empty HMAC secret accepted via async key resolver - JWT auth bypass
fast-jwt provides fast JSON Web Token (JWT) implementation. Prior to 6.2.4, a critical authentication-bypass vulnerability in fast-jwt's async key-resolver flow allows any unauthenticated attacker to forge arbitrary JWTs that are accepted as authentic. When t…
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Medium 6.1CVE-2026-44166 Public exploit
Pocketbase: Account pre-hijacking via OAuth2 unverfied->verified autolinking upgrade
Pocketbase is an open source web backend written in go. Prior to 0.22.42 and 0.37.4, in some situations, if an attacker knows the email address of the victim they can create and link an unverified PocketBase user in advance by authenticating with one of the O…
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Critical 9.8CVE-2026-43512 Public exploit
Apache Tomcat: Digest authenticator will authenticate any unknown user
DEPRECATED: Authentication Bypass Issues vulnerability in digest authentication in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from…
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Critical 9.8CVE-2026-27960 Public exploit
OpenCTI privilege escalation and unauthenticated access via default admin account
OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. In versions 6.6.0 through 6.9.12, there is a privilege escalation vulnerability that can be exploited by unauthenticated attackers to query the API as any exi…
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Critical 10.0
Paperclip Vulnerable to Unauthenticated Remote Code Execution via Import Authorization Bypass
Paperclip is a Node.js server and React UI that orchestrates a team of AI agents to run a business. Prior to version 2026.416.0, an unauthenticated attacker can achieve full remote code execution on any network-accessible Paperclip instance running in `authen…
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Critical 9.1CVE-2026-29145 Public exploit
Apache Tomcat, Apache Tomcat Native: OCSP checks sometimes soft-fail even when soft-fail is disabled
CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat, Apache Tomcat Native. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M7 through 10.1.52, from 9.0…
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Critical 9.3CVE-2026-39324 Public exploit
Rack::Session::Cookie secrets: decrypt failure fallback enables secretless session forgery and Marshal deserialization
Rack::Session is a session management implementation for Rack. From 2.0.0 to before 2.1.2, Rack::Session::Cookie incorrectly handles decryption failures when configured with secrets:. If cookie decryption fails, the implementation falls back to a default deco…
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Critical 9.4CVE-2026-35030 Public exploit
LiteLLM has an authentication bypass via OIDC userinfo cache key collision
LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.83.0, when JWT authentication is enabled (enable_jwt_auth: true), the OIDC userinfo cache uses token[:20] as the cache key. JWT headers produced by the same signi…
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Medium 5.0CVE-2026-34990 Public exploit
OpenPrinting CUPS: Local print admin token disclosure using temporary printers
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-controlled localhost IPP service with a reusable A…
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High 7.3CVE-2026-5000 Public exploit
PromtEngineer localGPT API Endpoint server.py LocalGPTHandler missing authentication
A vulnerability was detected in PromtEngineer localGPT up to 4d41c7d1713b16b216d8e062e51a5dd88b20b054. Impacted is the function LocalGPTHandler of the file backend/server.py of the component API Endpoint. The manipulation of the argument BaseHTTPRequestHandle…
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High 7.3CVE-2026-2991 Public exploit
KiviCare – Clinic & Patient Management System (EHR) <= 4.1.2 - Unauthenticated Authentication Bypass via Social Login Token
The KiviCare – Clinic & Patient Management System (EHR) plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 4.1.2. This is due to the `patientSocialLogin()` function not verifying the social provider access token …
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Critical 9.8CVE-2026-32136 Public exploit
AdGuard Home: HTTP/2 Cleartext (h2c) Upgrade Authentication Bypass
AdGuard Home is a network-wide software for blocking ads and tracking. Prior to 0.107.73, an unauthenticated remote attacker can bypass all authentication in AdGuardHome by sending an HTTP/1.1 request that requests an upgrade to HTTP/2 cleartext (h2c). Once t…
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Critical 9.8CVE-2026-23813 Public exploit
Authentication Bypass in Web Interface allows Unauthenticated Admin Password Reset
A vulnerability has been identified in the web-based management interface of AOS-CX switches that could potentially allow an unauthenticated remote actor to circumvent existing authentication controls. In some cases this could enable resetting the admin passw…
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High 7.8CVE-2026-26128 Public exploit
Windows SMB Server Elevation of Privilege Vulnerability
Improper authentication in Windows SMB Server allows an authorized attacker to elevate privileges locally.
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High 7.8CVE-2026-24294 Public exploit
Windows SMB Server Elevation of Privilege Vulnerability
Improper authentication in Windows SMB Server allows an authorized attacker to elevate privileges locally.
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Critical 10.0
Cisco Catalyst SD-WAN Controller Authentication Bypass Vulnerability
A vulnerability in the peering authentication in Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an unauthenticated, remo…
KEV Feb 25, 2026 -
High 8.8
Windows Admin Center Elevation of Privilege Vulnerability
Improper authentication in Windows Admin Center allows an authorized attacker to elevate privileges over a network.
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High 7.0CVE-2026-21508 Public exploit
Windows Storage Elevation of Privilege Vulnerability
Improper authentication in Windows Storage allows an authorized attacker to elevate privileges locally.
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High 7.4CVE-2025-69822 Public exploit
An issue in Atomberg Atomberg Erica Smart Fan Firmware Version: V1.0.36 allows an attacker to obtain sensitive informat…
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High 8.6CVE-2025-66698 Public exploit
An issue in Semantic machines v5.4.8 allows attackers to bypass authentication via sending a crafted HTTP request to va…
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Medium 6.3CVE-2026-0842 Public exploit
Flycatcher Toys smART Sketcher Bluetooth Low Energy missing authentication
A flaw has been found in Flycatcher Toys smART Sketcher up to 2.0. This affects an unknown part of the component Bluetooth Low Energy Interface. This manipulation causes missing authentication. The attack can only be done within the local network. The exploit…
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High 8.1CVE-2026-22594 Public exploit
Ghost has Staff 2FA bypass
Ghost is a Node.js content management system. In versions 5.105.0 through 5.130.5 and 6.0.0 through 6.10.3, a vulnerability in Ghost's 2FA mechanism allows staff users to skip email 2FA. This issue has been patched in versions 5.130.6 and 6.11.0.