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
3,163 results · Feed
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High 7.7
Flowise through 3.1.4 Authentication Bypass via Email-Only SSO
Flowise through 3.1.4 resolves SSO and local-password users solely by email without storing provider or subject identifier bindings, allowing attackers to authenticate as any existing user by claiming their email at any configured SSO provider. Attackers can …
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High 7.7
Flowise through 3.1.4 Authentication Bypass via SSO Email Match
Flowise through 3.1.4 (Enterprise/platform mode with SSO enabled) contains an authentication bypass in the SSO login path. When an SSO callback arrives with an email matching a user whose status is INVITED, verifyAndLogin (SSOBase.ts:80-94) copies the user re…
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Critical 9.1
Zammad: Account takeover via unverified email matching during SSO auto-link
Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, when the "Automatic account link on initial logon" setting is enabled, Zammad binds an incoming third-party (SSO) identity to an existing local account by matching the email a…
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Critical 9.1
X-SpringBoot through 6.0 Authentication Bypass via Login Code
X-SpringBoot through 6.0 returns login verification codes in HTTP responses from unauthenticated endpoints GET /sys/mobile/code and GET /sys/email/code without sending them to account owners. Attackers can request codes using known mobile numbers or email add…
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High 7.1
Zammad: PGP signature spoofing via unvalidated verification return
Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, summary In Zammad's inbound PGP email processing, the return value of the gpg verification call was silently discarded. Regardless of whether gpg reported a valid, invalid, or…
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Medium 5.3
zhistaredu StarTraining api-docs Endpoint SecurityConfig.java missing authentication
A security flaw has been discovered in zhistaredu StarTraining up to 3.8.1. The affected element is an unknown function of the file SecurityConfig.java of the component api-docs Endpoint. Performing a manipulation results in missing authentication. It is poss…
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High 7.3
zhistaredu StarTraining Druid Console index.html anonymous missing authentication
A vulnerability was identified in zhistaredu StarTraining up to 3.8.1. Impacted is the function anonymous of the file /druid/index.html of the component Druid Console. Such manipulation leads to missing authentication. The attack may be performed from remote.…
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Medium 5.3
GibbonEdu Gibbon Unit Planner units_add_blockAjax.php makeBlock missing authentication
A vulnerability has been found in GibbonEdu Gibbon up to 30.0.01. The affected element is the function makeBlock of the file modules/Planner/units_add_blockAjax.php of the component Unit Planner. The manipulation of the argument gibbonUnitBlockID/mode leads t…
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Medium 6.8
Keycloak-services: keycloak-services: standard token exchange v2 bypasses mtls holder-of-key binding
Keycloak provides a feature called mTLS holder-of-key binding which ensures that a token can only be used by the client that originally requested it by binding it to their digital certificate. A flaw was discovered where the new Standard Token Exchange V2 fea…
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Medium 4.4
Dell Rugged Control Center (RCC), versions prior to 5.2.206, contain an Improper Authorization vulnerability. A low pri…
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High 8.1
Dell Rugged Control Center (RCC), versions prior to 5.2.206, contain an Improper Authorization vulnerability. A low pri…
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High 8.2
ZITADEL: MFA bypass via session reuse in Login V2
ZITADEL is an open source identity management platform. From 4.0.0 until 4.16.1, ZITADEL Login V2 creates a browser session after password verification and can reuse that session for a later authentication request without verifying a user's enrolled TOTP, OTP…
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High 7.4
social-auth-core: VK App backend accepts unsigned callback data when auth_key is missing
Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the `vk-app` backend accepted VK application callback data without verifying the callback signature when the `auth_key` parameter was omitted. Applications using thi…
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Medium 6.4
social-auth-core has an Improper Authentication issue
Python Social Auth is a social authentication/registration mechanism. Prior to version 5.0.0, the SAML backend accepted SAML responses on the Assertion Consumer Service endpoint without verifying that they matched a previously issued `AuthnRequest`. Applicati…
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High 7.3
volotat Anagnorisis Socket.IO Connect app.py missing authentication
A vulnerability was found in volotat Anagnorisis up to 0.3.1/0.4.0. Affected is an unknown function of the file app.py of the component Socket.IO Connect Interface. The manipulation results in missing authentication. It is possible to launch the attack remote…
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High 8.9
authentik: MFA Bypass via State Confusion / Parameter Injection in AuthenticatorEmailStage
authentik is an open-source identity provider. Prior to 2026.2.7, 2026.5.7, and 2026.8.2, authentik email authenticator enrollment during an authentication or enrollment flow accepts a recipient address supplied in the setup request instead of using the addre…
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High 7.4
authentik: Authentication bypass via assertion confusion in SAML sources
authentik is an open-source identity provider. Prior to 2026.2.7, 2026.5.7, and 2026.8.2, an authentik SAML Source verifies an assertion's signature and validity period but does not ensure that the identity provider issued the assertion for that Source or in …
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High 7.5
CVE-2026-75907
The door access control on a Norwegian Cruise Line asset grants entry based only on the credential's static 7-byte UID stored on an NTAG212 NFC chip. A UID is a manufacturer serial number sent in the clear on every read and is not intended to be secret or to …
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High 8.1
phpMyFAQ's two-factor authentication login bypasses the password factor
phpMyFAQ is an open source FAQ web application. Versions 3.2.0 through 4.1.5 contain an authentication bypass in its public two-factor authentication verification flow: an unauthenticated attacker can submit an account’s numeric user ID and a valid or brute-f…
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Critical 9.8
Authentication Bypass in DIAEnergie
Improper Authentication vulnerability in DIAEnergie allows Authentication Bypass. This issue affects DIAEnergie: before 1.11.00.022.
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High 8.1CVE-2026-19125 Public exploit
EthPress <= 2.3.5 - Unauthenticated Authentication Bypass
The EthPress – Web3 Login plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 2.3.5. This is due to the verify_login() function in app/Login.php containing a missing return statement in the signature verification …
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High 7.4
AuthPoint Gateway Improper Authentication in LDAP Sync Allows First-Factor Authentication Bypass
A missing/improper authentication vulnerability in the WatchGuard AuthPoint Gateway's LDAP Sync first-factor authentication allows a remote attacker to bypass single-factor password verification under non-default operating conditions. Additional authenticatio…
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Medium 5.3
SUMIT Payment Gateway for WooCommerce < 4.0.0 - Unauthenticated Payment Confirmation Forgery via bit IPN
The SUMIT Payment Gateway for WooCommerce WordPress plugin before 4.0.0 does not verify with the payment provider that a payment notification is genuine before marking the corresponding order as paid, allowing unauthenticated users to mark a pending order pai…
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Critical 9.8
Apache Tomcat: Fix for CVE-2026-34500 was incomplete. OCSP checks sometimes soft-fail with FFM 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. This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.25, from 10.1.22 through 10.1.59, from 9.0.92 through 9.0.121. Us…
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High 7.3
Apache Tomcat: Cross-context authentication mix-up with Jakarta Authentication configured
Improper Authentication vulnerability in Apache Tomcat. When Jakarta Authentication was configured with SimpleAuthConfigProvider as the default provider and multiple web application used that provider, the realm for the first web application to authenticate a…
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Medium 6.8
Keycloak-services: keycloak-services: conditional otp skip-header policy evaluated against untrusted proxy headers
A flaw was found in the Conditional OTP authenticator of Keycloak, an identity and access management solution. The issue occurs when the system evaluates specific HTTP headers to determine if a one-time password (OTP) should be skipped, but fails to verify if…
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Medium 6.3
Reachy Mini Bluetooth PIN authentication can be bypassed by racing an authenticated device
The Reachy Mini Bluetooth service asks a connecting device for a PIN before it will accept commands. The check protects the session but not the caller, so an attacker in Bluetooth range can ride along on someone else's successful authentication. The authentic…
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High 7.5
Apache Doris: Improper Authentication Allows Unauthorized Access to FE Meta Service
An Improper Authentication vulnerability in the Apache Doris Frontend (FE) meta service allows an unauthenticated remote attacker to access internal metadata service endpoints. The affected endpoints relied on client-supplied node information for authenticati…
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Critical 9.0
WP OAuth Server < 6.4.0 - Subscriber+ Cross-User Account Takeover via OIDC ID Token Substitution
The WP OAuth Server ( Login with WordPress ) WordPress plugin before 6.4.0 does not bind the OpenID Connect identity assertion it issues to the authorization grant being exchanged, returning instead the assertion belonging to whichever user authenticated most…
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High 8.2
IBM Financial Transaction Manager (FTM) is Impacted by Multiple Vulnerabilities
IBM Financial Transaction Manager (FTM) for RedHat OpenShift could allow a remote attacker to perform unauthorized actions due to improper authentication and missing authorization.
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Critical 10.0
[mcp-atlassian] Authentication bypass in HTTP transport: AtlassianOpaqueTokenVerifier accepts any non-empty token
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, the HTTP transport accepts requests without a verified user identity and downstream fetcher construction falls back to the operator's globall…
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High 8.2
NVIDIA Infrastructure Controller for Linux contains a vulnerability where an attacker could cause an improper authentic…
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High 7.3
dgtlmoon changedetection.io Authentication Hook flask_app.py check_authentication improper authentication
A vulnerability has been found in dgtlmoon changedetection.io up to 0.60.7. The impacted element is the function check_authentication of the file changedetectionio/flask_app.py of the component Authentication Hook. Such manipulation leads to improper authenti…
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Critical 10.0
Gigatech PDV5701 WebSocket Service index.html missing authentication
A vulnerability was detected in Gigatech PDV5701 1.0.31_240305_112640. This issue affects some unknown processing of the file /index.html of the component WebSocket Service. The manipulation results in missing authentication. The attack can be launched remote…
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High 7.1
hatchet - Unauthenticated OAuth state CSRF / login-CSRF via empty-state collision in ValidateOAuthState
Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. Prior to 0.91.1, ValidateOAuthState clears the oauth_state_ session value to an empty string after a successful OAuth callback and later accepts an empty stat…
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Medium 4.2
nginx ignition has TOTP Reuse During Validity Window
nginx ignition is a user interface for the nginx web server. In versions 2.33.0 through 2.35.0, any user that has enabled the OTP 2FA can have their TOTP reused during the standard 30 second validity window. Version 2.35.1 patches the issue.
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Medium 5.3
Omega Solution HRM OS Role Permission API permission missing authentication
A weakness has been identified in Omega Solution HRM OS up to 20260717. This affects an unknown function of the file /role-permission/permission of the component Role Permission API. Executing a manipulation of the argument roleId can lead to missing authenti…
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Medium 5.3
NginxProxyManager nginx-proxy-manager Validate Route certificate.js internalCertificate.validate missing authentication
A vulnerability was detected in NginxProxyManager nginx-proxy-manager up to 2.15.1. This impacts the function internalCertificate.validate of the file backend/internal/certificate.js of the component Validate Route. The manipulation results in missing authent…
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Medium 4.3
Pixelfed OAuth Scope ApiV1Controller.php instancePeers missing authentication
A vulnerability was identified in Pixelfed up to 0.12.11. Impacted is the function instancePeers of the file app/Http/Controllers/Api/ApiV1Controller.php of the component OAuth Scope Handler. Such manipulation of the argument ID leads to missing authenticatio…
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Medium 5.3
OpenPanel API through 2.3.0 Authentication Bypass via Unverified Client Secret
OpenPanel tracking API through 2.3.0 fails to verify client secret cryptographic hash before authorizing revenue events and bot filtering. Attackers with only a public client ID can supply arbitrary dummy secrets to inject forged revenue metrics and bypass bo…