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
871 results · Clear filters · Feed
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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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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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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…
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Medium 6.5
Windows Admin Center Information Disclosure Vulnerability
Improper authentication in Windows Admin Center allows an authorized attacker to disclose information over a network.
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Medium 5.9
Clean RESTful - Critical - Unsupported - SA-CONTRIB-2026-078
vulnerability in Drupal Clean RESTful allows . This issue affects Clean RESTful versions: *.*.
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Medium 6.8
RabbitMQ: AMQP 1.0, AMQP 0-9-1, Stream Protocol loopback enforcement can lead to remote guest sessions due to listener-address loopback checks
RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, AMQP 0-9-1, AMQP 1.0, and Stream Protocol authentication can allow a loopback-restricted user such as guest to connect remotely when traffic is accepted through a trust…
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Medium 4.8
ZITADEL: Auto-linking by email: IdP-side email verification is not checked
ZITADEL is an open source identity management platform. Prior to 4.15.3, ZITADEL's external identity provider handler checks that the local user's email is verified but does not verify that the external IdP confirmed ownership of the same email before auto-li…
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Medium 6.5
Capgo - Account Creation Before CAPTCHA Validation in accept_invitation Endpoint
Capgo before 12.128.2 contains an improper validation vulnerability in the accept_invitation endpoint that creates user accounts before captcha validation is enforced. Attackers can bypass captcha protection by sending POST requests with invalid captcha token…
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Medium 6.8
OpenFGA: OIDC audience validation skipped when --authn-oidc-audience is unset
OpenFGA is an authorization/permission engine built for developers. Prior to 1.18.0, OpenFGA's OIDC authenticator skipped JWT audience validation when authn.method was set to oidc, authn.oidc.issuer was configured, and authn.oidc.audience was not set, allowin…
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Medium 6.5
mettle sendportal APIv1 Webhooks mailjet missing authentication
A vulnerability has been found in mettle sendportal up to 3.0.1. This issue affects the function sendgrid/postmark/postal/mailjet of the component APIv1 Webhooks. The manipulation leads to missing authentication. The attack is possible to be carried out remot…
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Medium —
Flask-Security-Too: WebAuthn reauthentication freshness bypass via cross-user assertion
### Summary Flask-Security-Too 5.8.0 and 5.8.1 mark a session as reauthentication-fresh after processing a WebAuthn assertion whose proven credential belongs to a different user than the currently authenticated session user. The check that `GHSA-97r5-pg8x-p63…
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Medium 6.5
zhayujie chatgpt-on-wechat CowAgent wx Endpoint common.py verify_server missing authentication
A weakness has been identified in zhayujie chatgpt-on-wechat CowAgent 2.1.0. This issue affects the function verify_server of the file channel/wechatmp/common.py of the component wx Endpoint. This manipulation of the argument wechatmp_token causes missing aut…
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Medium 5.6
NousResearch hermes-agent Discord Platform Integration discord.py DiscordAdapter._is_allowed_user improper authentication
A security vulnerability has been detected in NousResearch hermes-agent up to 0.15.2. This affects the function DiscordAdapter._is_allowed_user of the file gateway/platforms/discord.py of the component Discord Platform Integration. Such manipulation leads to …
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Medium 5.3
Full Account Takeover from BotPasswords and OAuth via action=changeauthenticationdata
Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Api/ApiChangeAuthenticationData.Php, includes/Api/ApiLinkAccount.Php, includes/Api/ApiRemoveAuthenticationData.Php, includes/Specials/SpecialLinkAcco…
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Medium 6.3
n8n - SSO Enforcement Bypass via API
n8n before 2.8.0 contains an authentication bypass vulnerability allowing authenticated SSO users to disable SSO enforcement through the API. Attackers can create local password credentials to authenticate directly, bypassing organizational SSO policies and i…
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Medium 6.5
Apache Tomcat: EncryptInterceptor not protected against replay attacks
Improper Authentication vulnerability in Apache Tomcat allowed a replay attack against the EncryptionInterceptor in the cluster component. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.13 through 9.…
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Medium 5.6
Documenso Google OAuth Login handle-oauth-callback-url.ts improper authentication
A vulnerability was detected in Documenso up to 2.11.0. Affected by this vulnerability is an unknown functionality of the file packages/auth/server/lib/utils/handle-oauth-callback-url.ts of the component Google OAuth Login. The manipulation results in imprope…
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Medium 6.0
Missing SNI/ALPN binding on stateful (session-ID) TLS session resumption
Missing SNI/ALPN binding on stateful (session-ID) resumption, which previously skipped the binding check performed for ticket-based resumption. A cached session could be resumed under a different SNI/ALPN than originally negotiated and, where client-authentic…
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Medium 6.0
TLS 1.3 post-handshake authentication: server accepts Finished without client Certificate/CertificateVerify
TLS 1.3 post-handshake authentication (PHA) issue where a server could accept a client's Finished message without the client having sent a Certificate and CertificateVerify. The post-handshake-auth exemption that allows an empty/absent peer certificate was on…
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Medium 6.5
Kubevirt: virt-handler-rhel9: kubevirt: virt-handler notify server trusts vmi identity from unauthenticated grpc request body
A flaw was found in KubeVirt's virt-handler domain notify server. The gRPC handlers for HandleDomainEvent and HandleK8SEvent derive the VMI identity (namespace/name) solely from the request body without validating it against the connection's origin. Each virt…
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Medium 4.3
Low‑privileged session IDs generated for the web admin console could be reused in the XML‑RPC API, whose authentication…
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Medium 4.8
capacitor-native-biometric - Authentication Bypass via Unvalidated CryptoObject in onAuthenticationSucceeded
capacitor-native-biometric before 12.128.2 contains an authentication bypass vulnerability where the onAuthenticationSucceeded() method fails to validate CryptoObject parameters. Attackers can hook the onAuthenticationSucceeded() function using dynamic instru…
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Medium 4.9
Cap-go - Authentication Logic Flaw in Enforce Password Policy
Capgo before 12.128.2 contains a flaw in the Enforce Password Policy feature: after a Super Admin enables the policy and successfully changes their password to a compliant one, the backend does not update the password-compliance state. As a result, the backen…
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Medium 5.3
Apache APISIX: Improper authentication in cas-auth plugin
Improper Authentication vulnerability in Apache APISIX. When the cas-auth plugin is used in a route, an attacker can possibly authenticate itself with credentials from a different source. This issue affects Apache APISIX: from 3.0.0 through 3.16.0. Users are …
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Medium 5.5
XianYuLauncher: Legacy Microsoft account OAuth sign-in flow lacks PKCE and state validation
XianYuLauncher is a Minecraft Java Edition launcher. In versions prior to 1.5.5, sensitive authentication artifacts could be exposed during a user-initiated login under certain local attack conditions. Affected versions relied on a fixed localhost redirect UR…
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Medium 6.8
DroneAware's Improper Account Activation in Registration and SSO Flows Leads to Account Takeover
DroneAware is a drone detection platform. The centralized DroneAware server backing droneaware.io was vulnerable to an account pre-hijacking attack in which an attacker could register an account using a victim's email address with an attacker-controlled passw…
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Medium 6.5
Vulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Authentication Engine). Supp…
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Medium 4.8
Apache CXF: Authentication Bypass in OAuth2 TokenIntrospectionService
An authentication bypass vulnerability exists in the OAuth2 TokenIntrospectionService in Apache CXF. Due to a missing 'throw' keyword in the security context check, the introspection endpoint (/services/oauth2/introspect) can be accessed by any unauthenticate…
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Medium 5.4
X.509 authentication bypasses Spring Security account checks
X509AuthenticationProvider could issue a fully authenticated X509AuthenticationToken when a presented certificate mapped to UserDetails, without applying Spring Security's standard account lifecycle checks (disabled, locked, expired, or credentials-expired ac…
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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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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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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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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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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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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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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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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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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…