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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Medium 5.7
ImageMagick: Heap Buffer Over-Read in distributed pixel cache server
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 6.9.13-48 and 7.1.2-23, an attacker who can connect to a magick -distribute-cache service can cause a heap buffer over-read in the server process.…
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Medium 5.3
russh server userauth state is not reset when authentication principal changes
Russh is a Rust SSH client & server library. From version 0.34.0-beta.1 to before version 0.61.0, the russh server authentication path keeps internal userauth state across SSH_MSG_USERAUTH_REQUEST messages without separating that state when the request princi…
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Low 3.5
A person with access to a Mac may be able to bypass Login Window. A consistency issue was addressed with improved state…
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High 8.3
Roxy-WI: Authentication bypass via 'api' substring in URL + unauthenticated /api/gpt
Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior, there is an authentication bypass vulnerability via 'api' substring in URL + unauthenticated /api/gpt. At time of publication, there are no p…
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Medium 6.8
Unauthorized User Impersonation when Using X.509 Client Certificates
SubjectDnX509PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user. A…
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High 8.4
Microsoft Cryptographic Services Elevation of Privilege Vulnerability
Improper authentication in Windows Cryptographic Services allows an unauthorized attacker to elevate privileges locally.
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Medium 4.3
FreeSWITCH: Pre-authentication `userVariables` injection in `mod_verto`
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.1, mod_verto's check_auth userauth branch wrote reques…
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Medium 5.3
FreeSWITCH: Pre-authentication session eviction via attacker-chosen `sessid` in `mod_verto`
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to version 1.11.1, mod_verto's JSON-RPC handler bound the connection t…
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High 7.4
Authentication Bypass with Empty Password in Spring LDAP
Spring LDAP's DirContextAuthenticationStrategy implementations do not reject a bind request where a non-empty username is paired with an empty or null password. Affected versions: Spring LDAP 2.4.0 through 2.4.4; 3.2.0 through 3.2.17; 3.3.0 through 3.3.7; 4.0…
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High 7.3
DTStack Taier Source Connection Test Endpoint LoginInterceptor.java preHandle improper authentication
A vulnerability was determined in DTStack Taier up to 1.4.0. The affected element is the function preHandle of the file taier-data-develop/src/main/java/com/dtstack/taier/develop/interceptor/LoginInterceptor.java of the component Source Connection Test Endpoi…
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Critical 9.1
An insecure authentication vulnerability in the /api/social-sign-in endpoint of bookcars v8.3 allows attackers to bypas…
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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 -
High 7.0
Whitelist Validation Bypass in TP-Link Tapo C520WS
On Tapo C520WS v2, restricted accounts (for example, hub users) are intended to execute only a limited set of low‑sensitivity operations. Due to a logic flaw in the device’s API authorization mechanism, an attacker can craft requests that leverage legitimate …
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Critical 10.0
UDS Identity Config has a client authentication bypass in `ClientIdAndKubernetesSecretAuthenticator`
UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS Core's Identity deployment. In versions 0.11.0 through 0.26.0, a logic error in the `client-kubernetes-secret` Keycloak client authenticator …
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Medium 6.9
Improper Authentication Bypass in linqi CDN File Access
An Improper Authentication vulnerability in the /api/Cdn/GetFile endpoint of linqi allows unauthenticated, remote attackers to bypass file access controls. The ValidateAnonFileAccess function incorrectly grants access if an 'AnonFile' query parameter containi…
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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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Medium 5.9
On affected platforms running Arista EOS with 802.1x authentication configured on the access/trunk ports, a malicious supplicant may bypass authentication.
On affected platforms running Arista EOS with 802.1x authentication configured on the access/trunk ports, and routing enabled on the access VLAN of the ports, a malicious supplicant may be able to bypass the requirement to perform 802.1x authentication.
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High 8.8
Unverified Meeting Recording Endpoints & Permissive CORS
Internal multimedia session archives are accessible without authentication, exacerbated by loose Cross-Origin Resource Sharing (CORS) rules that allow cross-site theft.
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High 7.2
Unauthenticated eSIM Configuration Manipulation
Crucial management API endpoints for cellular eSIM allocation do not validate caller authorization, allowing remote profiles to be rewritten or deleted.
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Critical 9.4
SCREEN_CLICK Authentication Bypass
The debugging routine SCREEN_CLICK(5053) enables a connection to skip the standard device login prompt entirely and directly enter an interactive shell interface.
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Critical 9.3
Exposed Hard-coded M3WebServer Backend API Key
The production build of the M3WebServer hard-codes its backend API keys, which can be easily intercepted through verbose error handling pages.
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High 8.6
Lack of MQTT Broker Topic Access Control Lists
The local MQTT broker does not enforce topic-level Access Control Lists (ACLs). This allows any client to subscribe using wildcard characters (# or +) to enumerate hidden network devices or publish rogue control commands.
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High 7.3
ealpha072 Student-Management-System Administrative Backend config.php improper authentication
A vulnerability was identified in ealpha072 Student-Management-System up to 01451bd7a2f58cdda07bd0b86e3967582e3ecd08. Affected by this issue is some unknown functionality of the file admin/config.php of the component Administrative Backend. Such manipulation …
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Medium 5.3
CloudburstMC Protocol: Partially missing validation for FULL type authentication tokens
CloudburstMC Protocol is a protocol library for Minecraft Bedrock Edition. Prior to version 3.0.0.Beta12-20260420.182526-15, CloudburstMC Protocol is partially missing validation for FULL type authentication tokens (Cloudburst/Protocol). This vulnerability im…
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Critical 9.8
authentik: SourceStage bypass via empty POST
authentik is an open-source identity provider. Prior to versions 2025.12.6, 2026.2.4, and 2026.5.1, the Source stage can be bypassed by sending an empty POST. This issue has been patched in versions 2025.12.6, 2026.2.4, and 2026.5.1.
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High 8.8
authentik: `UserSourceConnection.user` and `GroupSourceConnection.group` are changeable through the API
authentik is an open-source identity provider. Prior to versions 2025.12.6, 2026.2.4, and 2026.5.1, an attacker with the ability to change a source connection, and an account in one of the configured sources can log into any account. This issue has been patch…
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High 8.5
authentik: XML Signature Wrapping in SAML Source ACS allows authentication as arbitrary federated user
authentik is an open-source identity provider. Prior to versions 2025.12.5, 2026.2.3, and 2026.5.1, authentik's SAML Source ACS endpoint is vulnerable to XML Signature Wrapping when validating upstream SAML responses. An attacker with any account at the upstr…
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High 7.3
sayan365 student-management-system improper authentication
A vulnerability was detected in sayan365 student-management-system up to 7f3c9ce7d410332335c2affac93a385485051800. This impacts an unknown function. The manipulation results in improper authentication. The attack can be executed remotely. The exploit is now p…
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High 7.3
nextlevelbuilder GoClaw Webhook Verification auth.go resolveAuth missing authentication
A security vulnerability has been detected in nextlevelbuilder GoClaw up to 3.11.3. This affects the function resolveAuth of the file internal/http/auth.go of the component Webhook Verification Handler. The manipulation leads to missing authentication. Remote…
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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 8.2
OTP bypass via plugin-based LDAP authentication in MISP when LDAP mixed authentication is enabled
An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement. In deployments configured with LdapAuth.mixedAuth=true and Security.require_otp=true, users authenticated through an authentication plugin, s…
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High 7.5
Really Simple Security < 9.5.10.1 - Authentication Bypass via Two-Factor OTP Skip
The Really Simple Security WordPress plugin before 9.5.10.1 does not enforce the second-factor challenge in two of its two-factor authentication REST endpoints, allowing an attacker who knows a user's password to obtain a WordPress authentication session for …
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Medium 5.3
NousResearch hermes-agent Credential Pool Synchronization credential_pool.py _sync_anthropic_entry_from_credentials_file improper authentication
A security flaw has been discovered in NousResearch hermes-agent up to 2026.4.23. This affects the function _sync_anthropic_entry_from_credentials_file of the file agent/credential_pool.py of the component Credential Pool Synchronization. The manipulation res…
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High 7.5
Authentication Bypass in cf-auth-proxy in Cloud Foundry Foundation all installations allows an unauthenticated remote a…
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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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Medium 6.3
Bottelet DaybydayCRM Setting missing authentication
A vulnerability was detected in Bottelet DaybydayCRM up to 2.2.1. Affected is an unknown function of the component Setting Handler. Performing a manipulation results in missing authentication. Remote exploitation of the attack is possible. It is recommended t…
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High 7.3
Enderfga claw-orchestrator API Endpoint embedded-server.ts EmbeddedServer missing authentication
A weakness has been identified in Enderfga claw-orchestrator up to 3.5.5. This affects the function EmbeddedServer of the file src/embedded-server.ts of the component API Endpoint. This manipulation causes missing authentication. The attack may be initiated r…
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Medium 5.9
Nextcloud: Bypass of second factor authentication on DAV endpoints
Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, a pre-2FA session cookie (created after successful password authentication but before TOTP completion) could be…
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Medium 5.9
Nextcloud: Two-Factor Authentication Bypass via Pending Session Token Replay
Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.9, and 33.0.0 to before 33.0.3, an authentication bypass vulnerability allowed attackers with knowledge of a user's password to circumvent two-…
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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…