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
3,169 results · Feed
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Medium 6.3
Nextcloud: Files Lock app allows users to lock and unlock files of other users
Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.2, and 33.0.0 to before 33.0.1, the files_lock app did not properly validate the ownership of files when processing DAV lock and unlock request…
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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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Medium 4.6
Nextcloud: PIN bypass in PassCodeActivity via back button
Nextcloud is an open source content collaboration platform. From version 33.0.0 to before version 33.1.0, after unlocking a locked Android phone the back-button could be used to bypass the Nextcloud Files app PIN. This issue has been patched in version 33.1.0.
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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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High 7.3
OUSL-GROUP-BrinaryBrains School Student Management System MY_Controller Login.php sign_auth_cookie improper authentication
A weakness has been identified in OUSL-GROUP-BrinaryBrains School Student Management System up to 1e70e5ad1125b86dca4ee086eb6bb121f17708b6. This impacts the function sign_auth_cookie of the file application/controllers/Login.php of the component MY_Controller…
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High 7.3
Open5GS NGAP PathSwitchRequest Message ngap-handler.c improper authentication
A vulnerability was identified in Open5GS up to 2.7.6. This impacts an unknown function of the file src/amf/ngap-handler.c of the component NGAP PathSwitchRequest Message Handler. The manipulation leads to improper authentication. It is possible to initiate t…
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High 7.4
Openshift/router: openshift/router: mtls client certificate spoofing via unstripped x-ssl-client headers on http frontend
A flaw was found in the OpenShift Router. When a Route has `insecureEdgeTerminationPolicy` set to Allow, the HTTP frontend does not remove `X-SSL-Client-*` headers from incoming requests. This allows an unauthenticated attacker to send plain HTTP requests wit…
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Critical 10.0
Predator Connect W6x: Improper Authentication
Web endpoints intended for the Acer Connect app improperly validate the HTTP Authorization header, failing to block requests when Base64 decoding fails.
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Critical 9.8
OTP Login With Phone Number, OTP Verification <= 1.8.60 - Unauthenticated Authentication Bypass via Firebase OTP Verification
The OTP Login With Phone Number, OTP Verification plugin for WordPress is vulnerable to authentication bypass in versions 1.8.50 through 1.8.60. This is due to the Firebase verification flow in the `lwp_ajax_register` AJAX handler not binding the Firebase ses…
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Critical 10.0
Vulnerability in Oracle REST Data Services (component: Backend-as-a-Service). Supported versions that are affected are …
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High 8.8
Vulnerability in the Oracle Payroll product of Oracle E-Business Suite (component: Self Service Manager). Supported ver…
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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 -
Medium 5.3
CVE-2026-9091
Casdoor versions 2.362.0 and earlier contain a logic flaw in the social‑login binding flow that allows users to bypass configured MFA requirements. The binding‑rule code path in controllers/auth.go calls HandleLoggedIn directly without invoking checkMfaEnable…
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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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High 7.4
PyJWT: Public-key JWK accepted as HMAC secret enables forged HS256 tokens when mixed families are allowed
PyJWT is a JSON Web Token implementation in Python. Prior to 2.13.0, when the verifier is decoding JSON Web Tokens, while supporting both asymmetric and HMAC algorithms, the library does not validate use of JSON Web Keys in HMAC algorithm, allowing attacker t…
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Critical 9.3
Authentication Bypass
The Mennekes Amtron series (firmware versions ≤ 5.22.3) is vulnerable to an authentication bypass. An unauthenticated remote attacker can change the password of the user account via a crafted POST request to the /operator/operator endpoint.
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Medium 6.9
OpenLearnX: Critical Authentication Bypass via JWT Signature Verification Disabled Leading to Account Takeover
OpenLearnX is an open-source, decentralized learning and assessment platform. Prior to 2.0.4, a critical authentication vulnerability was identified in OpenLearnX that could allow unauthorized access to user accounts under specific conditions. This vulnerabil…
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High 7.9
pam_usb: Symlink attacks on pad directory and pad files enable authentication bypass and root file corruption
pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.8.7, symlink attacks on pad directory and pad files enable authentication bypass and root file corruption. This vulnerability is fixed in 0.8.7.
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High 7.1
pam_usb: OTP pad authentication bypass via missing system pad check and uninitialized RNG buffer
pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.0, the pusb_pad_compare() function in src/pad.c only verified that the user-side pad (~/.pamusb/device.pad) could be read, but did not enforce that the system-side…
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High 7.4
FileRise: TOTP Bypass via Setup Endpoint Disclosing Existing Secret
FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.12.0, /api/totp_setup.php is callable from a session that has only passed the password check (state pending_login_user). When the target account…
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Critical 9.1
Authentication bypass vulnerability found in Aspera High-Speed Transfer Server for Cloud Pak for Integration
IBM Aspera HSTS for CP4I 1.5.1 through 1.5.19 is affected by an authentication bypass vulnerability. A transfer client may be able to take advantage of this vulnerability to access files in the server's local storage that they should not have access to, when …
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High 8.1
Login with NEAR <= 0.3.3 - Authentication Bypass via 'account' Parameter
The Login with NEAR plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 0.3.3. The `ajaxLoginWithNear()` function — registered as a `wp_ajax_nopriv` action and therefore reachable by unauthenticated users — accept…
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Medium 5.5
SpSoft AppLock (com.sp.protector.free) 7.9.40 for Android allows a local attacker with physical access to bypass finger…
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High 7.5
MaxKB: Webhook Trigger Authentication Bypass
MaxKB is an open-source AI assistant for enterprise. Prior to 2.9.0, MaxKB's webhook trigger endpoint (/api/trigger/v1/webhook/{trigger_id}) is accessible without authentication. The WebhookAuth class unconditionally returns (None, {}), which Django REST Fram…
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Critical 9.3
Kavita: Pre-Auth Account Takeover
Kavita is a cross platform reading server. Prior to 0.9.0.2, an Improper Token validation flaw permits a remote and unauthenticated threat actor to request a JWT for any user including admins given knowledge of their username. This vulnerability is fixed in 0…
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Medium 6.8
Chatwoot: Pre-Account Takeover via OAuth on Unconfirmed Accounts
Chatwoot is a customer engagement suite. From 2.14.0 to before 4.13.0, a Pre-Account Takeover (Pre-ATO) vulnerability existed in Chatwoot's authentication flow. Because email confirmation was not enforced before an account became usable, an attacker could pre…
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High 8.2
Joomla! Core - [20260511] - MFA Authentication Bypass
Insufficient state checks lead to a vector that allows to bypass 2FA checks.
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High 8.2
Joomla! Core - [20260512] - MFA Authentication Bypass
Insufficient state checks lead to a vector that allows to bypass 2FA checks.
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Low 3.1
Besen BS20 EV Charging Station BLE/WiFi authentication replay
A security vulnerability has been detected in Besen BS20 EV Charging Station up to 20260426. This affects an unknown part of the component BLE/WiFi. Such manipulation leads to authentication bypass by capture-replay. The attack must be carried out from within…
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Low 3.7
JeecgBoot OpenAPI Endpoint call improper authentication
A vulnerability has been found in JeecgBoot 3.9.1. This issue affects some unknown processing of the file /openapi/call/ of the component OpenAPI Endpoint. Such manipulation leads to improper authentication. The attack can be executed remotely. A high complex…
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Medium 5.6
ItzCrazyKns Vane API route.ts missing authentication
A security vulnerability has been detected in ItzCrazyKns Vane up to 1.12.1. Affected by this issue is some unknown functionality of the file route.ts of the component API. The manipulation leads to missing authentication. The attack may be initiated remotely…
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Critical 10.0
Azure Resource Manager Elevation of Privilege Vulnerability
Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a network.
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High 8.1
RT: LDAP authentication bypass via empty password
RT is an open source, enterprise-grade issue and ticket tracking system. Versions 5.0.9 and prior in addition to 6.0.0 through 6.0.2 contain an authentication bypass vulnerability in RT installations that use LDAP/AD for user authentication. Under certain LDA…
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Medium 6.5
TypeBot: WhatsApp Webhook Endpoint Missing Signature Verification
TypeBot is a chatbot builder tool. In versions 3.16.0 and prior, the WhatsApp Cloud API webhook endpoint (POST /v1/workspaces/{workspaceId}/whatsapp/{credentialsId}/webhook) does not verify the x-hub-signature-256 HMAC signature included by Meta in every webh…
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Critical 9.8
Sunshine: Authentication bypass via improper client certificate validation
Sunshine is a self-hosted game stream host for Moonlight. In versions prior to 2026.516.143833, the client-certificate authentication can be bypassed because of how OpenSSL verification results are handled. In src/crypto.cpp, the custom verify callback treats…
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Medium 6.4
Authentication bypass via admin auth user
An authentication bypass vulnerability in Netatalk 2.2.2 through 4.4.2 allows a remote privileged user to authenticate as an arbitrary user via the admin auth user mechanism.
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High 8.7
authentik: SAML NameID XML Comment Injection Enables Authentication Bypass via Identifier Truncation
authentik is an open-source identity provider. Versions 2025.12.4 and prior, and versions 2026.2.0-rc1 through 2026.2.2 were vulnerable to Authentication Bypass through SAML NameID XML Comment Injection. Due to how authentik extracted the NameID value from a …
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Medium 5.3
Improper Authentication issue in ArcGIS Server
ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of …
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Medium 6.0
MISP OIDC authentication bypass via automatic email-based account linking under insecure IdP configurations
MISP’s OIDC authentication plugin allowed automatic linking of an OIDC identity to an existing local user account based on the email claim when the local account had no stored sub value. Under insecure or untrusted IdP configurations where email ownership is …
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High 8.8
Account Switcher <= 1.0.2 - Authenticated (Subscriber+) Authentication Bypass to Privilege Escalation
The Account Switcher plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.0.2. This is due to the `rememberLogin` REST API endpoint using a loose comparison (`!=` instead of `!==`) for secret validation at `app/Re…