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
3,168 results · Feed
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Critical 9.4
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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Medium 4.3
Paymenter doesn't reset email verification status after email change
Paymenter is a free and open-source webshop solution for management of hosting services. In versions prior to 1.5.0, the email update functionality fails to invalidate the existing verification state when a user changes their email address, allowing a verifie…
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High 8.6
FreeScout Vulnerable to Unauthenticated Conversation Thread Injection via HMAC Length Bypass in FetchEmails
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.223, an unauthenticated attacker can inject messages into any existing support conversation by sending a single email to the helpdesk's public address with…
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High 8.8
SailPoint IdentityIQ Improper Bearer Token Validation Vulnerability
This vulnerability impacts all versions of IdentityIQ and allows an unauthenticated attacker unauthorized access to protected APIs and data due to improper validation of OAuth bearer tokens.
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High 7.5
FreeScout Allows Unauthenticated Access to Legacy Attachment Files
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.221, FreeScout's attachment download route skips token authentication for any attachment whose `token_type` is set to `1` (`TOKEN_TYPE_LEGACY`). Because th…
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High 8.0
xrdp: No authentication required with Xvnc backend on RHEL 9
xrdp is an open source RDP server. In versions 0.10.6 and prior, when an authenticated user session is initialized using the Xvnc backend over UNIX domain sockets, the Xvnc process is launched with insufficient authentication mechanisms. A local authenticated…
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Medium 5.3
Flask-Security-Too OAuth reauthentication freshness bypass via cross- user OAuth identity acceptance
Flask-Security-Too allows users to add security features to their Flask applicationa. Version 5.8.0's OAuth reauthentication flow can mark a session as fresh after verifying an OAuth account that belongs to a different user. If an attacker can operate an alre…
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Medium 5.3
Webmin 2FA requirement bypass
Webmin is a web-based system administration tool for Unix-like servers. Prior to version 2.640, for Webmin accounts that require a second authentication factor (typically TOTP), an attacker with knowledge of the username and password can bypass the 2FA requir…
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High 7.3
newpanjing simpleui AjaxAdmin AJAX Endpoint admin.py self.get_action missing authentication
A vulnerability was found in newpanjing simpleui 2026.01.13. This affects the function self.get_action of the file simpleui/admin.py of the component AjaxAdmin AJAX Endpoint. Performing a manipulation results in missing authentication. Remote exploitation of …
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High 7.3
Gerapy Project Upload Endpoint views.py missing authentication
A vulnerability has been found in Gerapy up to 0.9.13. The impacted element is an unknown function of the file gerapy/server/core/views.py of the component Project Upload Endpoint. Such manipulation leads to missing authentication. The attack may be launched …
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Medium 5.6
Sipeed PicoClaw First Run Setup access_control.go authentication bypass
A vulnerability was detected in Sipeed PicoClaw up to 0.2.9. The impacted element is an unknown function of the file web/backend/middleware/access_control.go of the component First Run Setup. Performing a manipulation of the argument allowed_cidrs results in …
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Medium 6.3
SurrealDB before 1.5.4 Authentication Bypass via Database Switch
SurrealDB before 1.5.4 and 2.0.0-alpha.1 before 2.0.0-alpha.6 fails to properly validate authentication when a scope user switches databases using the USE clause or use method. Attackers with an authenticated session can impersonate an unrelated user in a dif…
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Critical 9.8
VMware Avi Load Balancer Authentication Bypass Vulnerability
VMware Avi Load Balancer contains an authentication bypass vulnerability. A malicious user with network access may be able to access the Avi Control plane by bypassing the authentication mechanism. Affected versions: 31.1.1 through 31.2.2 (fixed in 31.2.2-2p3…
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Medium 5.3
Sipeed PicoClaw LINE Webhook line.go webhook.ParseRequest authentication replay
A security flaw has been discovered in Sipeed PicoClaw up to 0.2.9. This affects the function webhook.ParseRequest of the file pkg/channels/line/line.go of the component LINE Webhook. The manipulation results in authentication bypass by capture-replay. The at…
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Medium 6.3
AstrBotDevs AstrBot API open_api.py OpenApiRoute.chat_send authentication spoofing
A vulnerability has been found in AstrBotDevs AstrBot up to 4.25.5. This issue affects the function OpenApiRoute.chat_send of the file astrbot/dashboard/routes/open_api.py of the component API. Such manipulation of the argument Username leads to authenticatio…
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High 8.7
joserfc: HS256/HS384/HS512 verify accepts empty/nil HMAC key (cross-language sibling of CVE-2026-45363)
joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty st…
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Medium 6.3
poco-ai poco-claw executor_manager API tasks.py create_task missing authentication
A vulnerability was determined in poco-ai poco-claw up to 0.5.4. This vulnerability affects the function create_task of the file executor_manager/app/api/v1/tasks.py of the component executor_manager API. Executing a manipulation can lead to missing authentic…
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High 7.4
Grav < 2.0.4 2FA Bypass via Secret Regeneration
Grav before 2.0.4 contains a two-factor authentication bypass vulnerability in the login plugin where the regenerate2FASecret task checks only user existence, not authorization, during the pending TOTP challenge window. Attackers who know the victim's passwor…
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Critical 9.6
Spring Security Authorization Server Dynamic Client Registration endpoints perform insufficient validation of client metadata
Authentication bypass by primary weakness vulnerability in Spring Security Spring Authorization Server. This issue affects Spring Authorization Server: from 7.0.0 through 7.0.4, from 1.5.0 through 1.5.6, from 1.4.0 through 1.4.9, from 1.3.0 through 1.3.10.
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Critical 9.8
Happy Coders OTP Login for WooCommerce < 2.8 - Unauthenticated Account Takeover via hcotp_auto_login_user
The Happy Coders OTP Login for WooCommerce WordPress plugin before 2.8 does not verify that a one-time password was actually validated before authenticating a user based on a supplied identifier, allowing unauthenticated attackers to log in as any existing us…
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High 8.1
Abandoned Cart Lite for WooCommerce < 6.8.2 - Unauthenticated Account Takeover via Malleable Recovery-Link Token
The Abandoned Cart Lite for WooCommerce WordPress plugin before 6.8.2 does not protect the integrity of its cart-recovery tokens or bind them to the requesting account, allowing unauthenticated attackers to forge a recovery link that logs them in as another u…
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Critical 9.3
Qinglong: Incomplete fix for CVE-2026-3965: Improper Authentication
Qinglong is a timed task management platform supporting Python3, JavaScript, Shell, and Typescript. Prior to 2.20.1, the init guard middleware in back/loaders/express.ts checks /api/user/init but not /open/user/init, while rewrite('/open/*', '/api/$1') rewrit…
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Critical 9.8
Wekan: Header-login IP allowlist bypass via X-Forwarded-For spoofing in Wekan allows unauthenticated full account takeover (incl. admin)
Wekan is open source kanban built with Meteor. Prior to 9.46, header-login with HEADER_LOGIN_TRUSTED_IPS uses getRequestIp() in server/lib/headerLoginAuth.js to trust the client-supplied X-Forwarded-For header before the real socket address, allowing an unaut…
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Critical 9.2
Wekan: OIDC Account Takeover via Unconditional Email-Based Account Merge in onCreateUser hook
Wekan is open source kanban built with Meteor. Prior to 9.32, the Wekan Accounts.onCreateUser hook in server/models/users.js merges OIDC logins into existing accounts when the OIDC email or username matches an existing Wekan user, without verifying ownership …
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High 8.2
Dash: Users can write to config despire permissions (OIDC tested)
Dashy is a self-hostable personal dashboard. Prior to 4.0.8, Dashy deployments using OIDC can allow unauthenticated users or non-admin authenticated users to write changes to the main config.yaml through the config-saving functionality despite configured perm…
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High 7.7
Better Auth: Unauthorized invitation acceptance via unverified email match in organization plugin
Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, and in 1.6.14 and later when invitation IDs can be obtained outside the invited mailbox and requireEmailVerificationOnInvitation: true is not enabled, the organization…
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Critical 9.1
Better Auth: OAuth refresh-token replay via missing client authentication on oidc-provider and mcp plugins
Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, the legacy oidcProvider and mcp plugins expose OAuth token endpoints whose refresh_token grant authenticates only possession of the bound refreshToken row and matching…
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High 8.3
Better Auth: Account takeover via OAuth auto-link to unverified pre-registered email
Better Auth is an authentication and authorization library for TypeScript. Prior to 1.6.11, Better Auth's OAuth callback auto-link gate in handleOAuthUserInfo accepts implicit account linking when the OAuth provider asserts email_verified: true without requir…
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High 7.5
Apollo ConfigService access key authentication bypass via appId parsing and non-canonical matching
Apollo is a reliable configuration management system suitable for microservice configuration management scenarios. Prior to 2.5.2, Apollo ConfigService may allow unauthorized access to configuration data when AccessKey or management key authentication is enab…
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High 7.5
Apollo ConfigService access key authentication bypass via raw config file appId parsing
Apollo is a reliable configuration management system suitable for microservice configuration management scenarios. Prior to 2.5.2, Apollo ConfigService may allow unauthorized access to raw configuration data when AccessKey or management key authentication is …
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Critical 9.9
Penpot: Pre-authenticated account takeover via team-invitation token + prepare-register-profile
Penpot is an open-source design tool for design and code collaboration. Prior to 2.14.5, Penpot exposed teams_invitations.clj invitation tokens from create-team-invitations, embedded an existing profile id in auth.clj prepare-register-profile, and had auth.cl…
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Medium 6.9
Vaultwarden: Authentication Flow Information Disclosure in SSO Discovery Allows Organization Enumeration and Pre-Validation Token Exposure
Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.36.0, Vaultwarden's SSO discovery and pre-validation flow returned organization-related SSO metadata including organizationIdentifier values for arbitrary email addresses and allowed a v…
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Critical 9.3
LightRAG: Authentication bypass: hardcoded DEFAULT_TOKEN_SECRET and public /auth-status defeat LIGHTRAG_API_KEY protection
LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.4, when LightRAG is deployed with LIGHTRAG_API_KEY set but AUTH_ACCOUNTS unset, X-API-Key protection can be bypassed because lightrag/api/auth.py falls back to a hardcoded DEFAULT_…
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High 8.6
PraisonAI before 4.6.78 Missing Webhook Signature Verification
PraisonAI before 4.6.78 fails to verify Svix webhook signatures in AgentMail webhook mode, allowing unauthenticated attackers to forge message.received events. Attackers can send crafted JSON payloads to the webhook endpoint to invoke configured agents with a…
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High 8.2
PraisonAI before 4.6.78 Authentication Bypass via Host Header Spoofing
PraisonAI before 4.6.78 contains an authentication bypass in the Call API agent invocation endpoints (src/praisonai/praisonai/api/agent_invoke.py) when PRAISONAI_CALL_AUTH=disabled is configured. The safeguard intended to restrict the disabled-auth opt-out to…
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Medium 4.8
n8n - Authentication Bypass in Chat Trigger Node
n8n contains an authentication bypass in the Chat Trigger node when configured with n8n User Auth (a non-default configuration). In affected releases — before 1.123.22, the 2.0.0 through 2.9.2 line, and 2.10.0 — the authentication check on the Chat Trigger we…
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High 8.1
Shibboleth < 2.5.4 - Unauthenticated Administrator Account Creation via Identity Header Spoofing
The Shibboleth WordPress plugin before 2.5.4 does not fail closed when its HTTP header identity mode is enabled without an anti-spoofing key, treating any request that carries identity headers as an authenticated session without verifying them. On a deploymen…
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Critical 9.8
Authentication Bypass in Navigator and Blue Planet Products
An authentication bypass vulnerability exists in certain releases of Ciena Navigator Network Control Suite (NCS), Manage Control Plan (MCP), and Blue Planet products. The issue is caused by improper handling of HTTP request paths and headers, which allows an …
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Critical 9.1
`jwt` (Ruby gem) - empty-key HMAC bypass
ruby-jwt is a Ruby implementation of the RFC 7519 OAuth JSON Web Token standard. Prior to 2.10.3 and 3.2.0, JWT.decode(token, '', true, algorithm: 'HS256') accepts an attacker-forged token because OpenSSL::HMAC.digest('SHA256', '', payload) returns a valid di…
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Medium 6.9
Symfony: Mailjet Mailer Webhook Parser Never Verifies the Configured Secret — Unauthenticated Webhook Event Injection
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 6.4.40, 7.4.12, and 8.0.12, the Mailjet mailer bridge and LOX24 notifier bridge webhook parsers received configured webhook secrets but did not verify t…