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
1,194 results · Clear filters · Feed
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High 8.1
Grav Login Plugin 2.7.0 before 3.9.9 2FA Bypass via Profile Update Form
Grav Login plugin 2.7.0 before 3.9.9 contains an authentication bypass in processUserProfile(), which checks that the session user exists but not that a pending front-end 2FA session is fully authorized. Attackers with a victim's password who can publish a pa…
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High 7.5
Improper OAuth token validation in Progress MarkLogic Server
Progress MarkLogic Server 12.x releases before 12.1.0 and 11.x releases before 11.3.7 contain an authentication validation weakness that could allow an attacker to use a token that should not be accepted by the affected server, which could result in unauthori…
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High 7.3
agno-agi agno auth.py get_authentication_dependency missing authentication
A vulnerability was identified in agno-agi agno up to 2.7.3/3.0.6. This affects the function get_authentication_dependency of the file auth.py. Such manipulation of the argument security_key leads to missing authentication. The attack may be launched remotely…
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High 8.2
AmoyLab Unla through 0.10.0 OAuth2 Authentication Bypass via /authorize
AmoyLab Unla through 0.10.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to obtain valid access tokens because the OAuth2 server never authenticates a resource owner. Attackers can register a client, request a code fro…
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High 8.8
Disable Users <= 1.0.5 - Disabled Account Authentication Bypass via XML-RPC and Application Passwords
The Disable Users WordPress plugin through 1.0.5 does not enforce its account-disabling control on all authentication paths, allowing the holder of an account an administrator has disabled to continue authenticating with the account's full privileges.
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High 8.3
Studio-Saelix Sencho Login Endpoint login improper authentication
A vulnerability was found in Studio-Saelix Sencho up to 0.94.1. This affects an unknown part of the file /api/auth/login of the component Login Endpoint. Performing a manipulation of the argument X-Forwarded-For results in improper authentication. The attack …
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High 7.3
AstronRPA through 1.1.6 Authentication Bypass via Arbitrary Bearer Token
AstronRPA through 1.1.6 contains an authentication bypass vulnerability in the OpenResty gateway's auth_handler.lua that accepts any Bearer token without validation. Unauthenticated attackers can send arbitrary Bearer values to reach /api/resource/ and /api/r…
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High 8.1
WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN) <= 44.1 - Unauthenticated Authentication Bypass via OIDC Nonce Replay via id_token Nonce Verification
The WPO365 | SEAMLESS WORDPRESS + MICROSOFT INTEGRATION (WPO365 | LOGIN) plugin for WordPress is vulnerable to Authentication Bypass via OIDC Nonce Replay in all versions up to, and including, 44.1 This is due to `Id_Token_Service_Deprecated::process_openidco…
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High 8.1
SMS Alert 4.0.0 - Unauthenticated Authentication Bypass via Login with OTP
The SMS Alert WordPress plugin before 4.0.1 does not verify that the account being logged in is the one the verified one-time code belongs to, allowing unauthenticated attackers to sign in as any user with a stored phone number, including an administrator, by…
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High 8.1
Advanced Form Integration <= 2.9.0 - Unauthenticated Unverified Password Change to Authentication Bypass / Privilege Escalation via Contact Form 7 Submission to Ultimate Member Update Profile Field Action
The Advanced Form Integration — Connect Forms to 300+ Apps plugin for WordPress is vulnerable to Authentication Bypass via Unverified Password Change in all versions up to, and including, 2.9.0 The `adfoin_ultimatememberac_send_data` function, which powers th…
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High 7.5CVE-2026-62367 Public exploit
Vikunja: OIDC email-fallback account linking ignores email_verified, enabling local-account takeover
Vikunja is an open-source self-hosted task management platform. In versions 1.0.0 through 2.3.0, when an administrator enables the per-provider `emailfallback` option on an OpenID Connect provider, Vikunja links an SSO login to a pre-existing local (username+…
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High 8.1
pyload-ng: getUserData/get_userdata exposed at Perms.ANY allow any authenticated account to brute-force the administrator password
## Summary `Api.getUserData` (legacy) and `Api.get_userdata` are declared with `@permission(Perms.ANY)` and are reachable at `/api/getUserData` and `/api/get_userdata`. Because `Perms.ANY == 0` and pyLoad's permission check is a bitmask AND, that gate is a no…
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High 8.1
pyLoad has an authentication bypass in API key validation (check_apikey cache)
## Summary The API-key cache in `check_apikey()` allows an attacker to authenticate with a **forged API key** as long as the legitimate key for the same `key_id` has been used recently. On a cache hit, the API key **secret is never verified**, resulting in a …
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High 8.1
Pingvin Share X 0.19.0 before 1.22.0 Account Takeover via OAuth Email Linking
Pingvin Share X from 0.19.0 before 1.22.0 contains an improper authentication vulnerability that allows remote unauthenticated attackers to take over accounts by abusing automatic OAuth email linking in OAuthService.signUp(). Attackers can register a victim's…
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High 8.1
Nginx UI: Authentication bypass: password login does not enforce a passkey-only second factor (2FA bypass)
Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0, POST /api/login checks EnabledOTP but does not require a WebAuthn assertion when EnabledPasskey is true and no TOTP secret is configured. A passkey-only account is therefore is…
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High 7.1
PHPNuxBill through 2025.3.20 CHAP Authentication Bypass via Password::chap_verify()
PHPNuxBill through 2025.3.20 contains an authentication bypass vulnerability in RADIUS CHAP verification because Password::chap_verify() returns true when the supplied response does not match. Attackers who know a valid customer or PPPoE username can log in t…
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High 8.1
Authentication bypass in FalkorDB Bolt endpoint via fail-open AUTH probe error handling
An improper authentication vulnerability in the is_authenticated function (src/bolt/bolt_api.c) in FalkorDB before 4.20.0 allows a remote unauthenticated attacker to execute graph queries without credentials through the Bolt endpoint. The function decides whe…
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High 8.7
Unauthenticated JSON API Authorization Bypass Vulnerability in TP-Link Tapo C325WB
TP-Link Tapo C325WB V2 contains an unauthenticated authorization bypass vulnerability in the HTTPS JSON API dispatcher on TCP port 443. An attacker on the adjacent network can append an onboarding-scoped object to a JSON request to bypass session verification…
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High 8.1
Security vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify Access
IBM Security Verify Access 10.0 through 10.0.9.2 and IBM Verify Identity Access 11.0 through 11.0.3 could allow a remote authenticated attacker to bypass security restrictions due to improper authentication.
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High 7.1
MISP: Forced TOTP Enrolment Bypassed via Non-Browser Request Types on otp_required Instances
On MISP instances configured to require TOTP enrolment (Security.otp_required), the enforcement of the mandatory two-factor authentication setup applied only to standard browser requests. An authenticated user who had not yet enrolled in TOTP could bypass the…
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High 7.7
wolfSSHd on Windows race condition leading to logon token reused across connections
When password or public key authentication is used with the Windows port of wolfSSHd, the Windows logon token acquired for one authenticated connection is not released before a token is acquired for a subsequent connection, resulting in user login poisoning b…
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High 8.1
Backstage: Improper authentication in the OIDC provider
Backstage is an open framework for building developer portals. Prior to 0.4.20, the @backstage/plugin-auth-backend-module-oidc-provider package is affected by improper authentication in the oidc provider. Deployments using OIDC email-based identity resolution…
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High 8.1
Gitea installer authentication bypass for existing accounts
When Gitea's web installer is reachable against a database that already contains users, such as after `INSTALL_LOCK` has been reset to `false`, submitting the install form with an administrator username matching an existing account issued an authenticated ses…
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High 7.6CVE-2026-59358 Public exploit
UAA OAuth Token Endpoint Vulnerability allows user access token reuse for client_credentials grant type
Improper authentication (CWE-287) in the OAuth token endpoint in Cloud Foundry UAA allows a remote, authenticated attacker holding a valid user access token to obtain a fully-privileged client_credentials token for the OAuth client that issued it, by presenti…
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High 7.3
SourceCodester Drug Recommendation System Auth Guard improper authentication
A vulnerability was identified in SourceCodester Drug Recommendation System 1.0. This affects an unknown function of the component Auth Guard. Such manipulation of the argument user_id leads to improper authentication. The attack can be executed remotely. The…
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High 7.3
OSSRS srs System API api.go systemAPI.Run missing authentication
A vulnerability was detected in OSSRS srs up to 7.0-a1. This affects the function systemAPI.Run of the file internal/proxy/api.go of the component System API. Performing a manipulation results in missing authentication. It is possible to initiate the attack r…
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High 7.5
CVE-2026-82988
There exists an arbitrary file download in vCast APK delivery mechanism in ViewSonic ViewBoard unknown allows a remote, unauthenticated attacker to trigger unprivileged APK installation via serving a malicious APK URL through an unauthenticated download endpo…
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High 7.3
Casdoor API Endpoint authz_filter.go ApiFilter missing authentication
A vulnerability was detected in Casdoor up to 3.161.1. Affected is the function ApiFilter of the file routers/authz_filter.go of the component API Endpoint. Performing a manipulation results in missing authentication. The attack can be initiated remotely. The…
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High 7.3
kishor-23 food-waste-management-system Admin Signup signup.php missing authentication
A weakness has been identified in kishor-23 food-waste-management-system 411989e3ecb82895e53dca7865f72145f03d7d93/b3a70b2c492dc9904de5be1ad9389bd79b87f82c. Affected is an unknown function of the file admin/signup.php of the component Admin Signup. This manipu…
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High 7.5
ZITADEL before 3.4.14 and 4.16.2 Account Takeover via Passkey Enrollment
ZITADEL 3.x before 3.4.14 and 4.x before 4.16.2 contains an authentication bypass in the hosted Login V1 and Login V2 UIs that accepts passkey or other authenticator enrollment on identify-only login sessions, before any primary factor is verified. Unauthenti…
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High 8.2
ZITADEL before 4.17.1 Authentication Bypass via Login V2 for Deactivated Organizations
ZITADEL 4.x before 4.17.1 does not check an organization's inactive state during Login V2 authentication, verifying only the individual user's status. Users of a deactivated organization who hold valid credentials, an existing session, or a refresh token can …
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High 8.2
ZITADEL before 4.17.1 Unauthenticated MFA Enrollment via Login V1 Init Handlers
ZITADEL 3.x before 3.4.15 and 4.x before 4.17.1 contains a missing authentication flaw in the hosted Login V1 UI, whose second-factor enrollment and initialization handlers act on an identify-only session before any primary factor is verified. Attackers knowi…
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High 7.3
Ahsay AhsayCBS API ApiStructsAction.java checkSysPwd improper authentication
A vulnerability was detected in Ahsay AhsayCBS up to 9.15.2.69/10.3.4.44. This affects the function checkSysPwd of the file com/ahsay/obs/api/ApiStructsAction.java of the component API. Performing a manipulation of the argument random results in improper auth…
KEV Oct 14, 2026 -
High 8.2
TillKit < 1.0.5 - Unauthenticated POS Takeover via Hard-Coded Default Manager PIN
The TillKit WordPress plugin before 1.0.5 does not require the hard-coded, publicly known PIN of the privileged POS account it creates on activation to be changed before use, and it authenticates its public POS login endpoint on that PIN alone with no identit…
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High 7.5
WP 2FA < 4.1.0 - Two-Factor Authentication Bypass via TOTP Code Replay
The WP 2FA WordPress plugin before 4.1.0 does not invalidate a time-based one-time passcode once it has been used, allowing an attacker who knows an account's password and has observed a valid code within its validity window to replay it and bypass two-factor…
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High 8.7
Unauthenticated Remote Code Execution via MacTool Command Injection in TP-Link Tapo C120 & C200
Tapo C120 v1 and C200 V5 do not adequately protect login challenge data or sanitize attacker-controlled input processed by the MacTool handler. An unauthenticated attacker on the same local network can replay login challenge data to obtain an administrative s…
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High 7.6
MISP HOTP Token Replay via Stale Session-Cached Counter Allows Second-Factor Authentication Bypass
MISP contains a vulnerability in its one-time password (OTP) authentication flow that allows replay of a consumed HOTP (paper) token and rewinding of the token counter. The HOTP verification logic compared the submitted token against a counter value that was …
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High 7.3
ZongXR Supermarket save Endpoint OrderController.java OrderController.addOrder missing authentication
A vulnerability was identified in ZongXR Supermarket 1.0.0.0. Affected by this vulnerability is the function OrderController.addOrder of the file order/src/main/java/com/supermarket/order/controller/OrderController.java of the component save Endpoint. Such ma…
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High 7.5
Kiteworks Email Protection Gateway Improper Authentication
An identity-verification weakness in Kiteworks Email Protection Gateway allowed the gateway to act on the Kiteworks platform on behalf of a user it had not authenticated, and to provision a platform account for an identity it did not already know. A remote, u…
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High 8.1
Authentication Bypass Leading to Unauthorized Network Access in HPE Networking Instant ON API Endpoint
An authentication bypass vulnerability in the API endpoint of HPE Networking Instant ON could allow an unauthenticated remote attacker to bypass network access controls if certain preconditions outside of the attacker's control are met. Successful exploitatio…