Weakness (CWE)
CWE-307: Improper Restriction of Excessive Authentication Attempts
The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.
How to prevent it (2 mitigations)
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Architecture and Design
Common protection mechanisms include:
- Disconnecting the user after a small number of failed attempts
- Implementing a timeout
- Locking out a targeted account
- Requiring a computational task on the user's part.
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Architecture and Design
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
Consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator. [REF-45]
Source: MITRE CWE-307
87 results · Clear filters · Feed
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Critical 9.8CVE-2026-84473 Public exploit
CVE-2026-84473
Authentication Bypass / Missing Brute-Force Protection in remote.php/webdav/ in ownCloud ownCloud server 10.16.3 allows an unauthenticated remote attacker to perform unlimited online password guessing against WebDAV accounts via repeated HTTP Basic Authentica…
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Critical 9.1
PHPNuxBill through 2025.3.20 Account Takeover via Brute-Forceable Password Reset Code
PHPNuxBill through 2025.3.20 contains an account takeover vulnerability in the customer password reset flow in system/controllers/forgot.php that allows unauthenticated attackers to brute-force the 6-digit otp_code. Attackers knowing a customer username can g…
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Critical 9.1
Plane: Magic-code verifier endpoint has no rate limit, enabling 6-digit OTP brute force
Plane is an open-source project management tool. Prior to 1.4.0, Plane's magic-code email login uses a six-digit numeric OTP with approximately 20 bits of entropy. The verifier has no per-code failed-attempt counter, and an incorrect code does not increment a…
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Critical 9.1
LightRAG: No Rate Limiting on /login Endpoint Allows Brute-Force Attacks
LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, the POST /login endpoint in lightrag/api/lightrag_server.py does not impose a rate limit, account lockout, delay, or counter for failed authentication attempts. A network attack…
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Critical 9.1
Joplin: SSO Auth Code Login Missing Rate Limiting — 9-Digit Numeric Code Brute-Forceable via Unprotected Endpoint
Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.2, Joplin Server's GET /api/login_with_code/:id endpoint accepts a nine-digit SSO authentication code with a ten-minute lifetime without app…
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Critical 9.4
OTP Bypass in Bahçelievler Muncipality's BiHayat App
Improper restriction of excessive authentication attempts vulnerability in Bahçelievler Muncipality BiHayat App allows Authentication Bypass. This issue affects BiHayat App: from 2.1.7 before 2.3.
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Critical 9.1
TypeBot: Account takeover via brute-forceable 6-digit magic-link code
Typebot is an open-source chatbot builder. In self-hosted versions up to and including 3.17.1, the default passwordless email magic-link authentication is vulnerable to login-code brute forcing that leads to account takeover. The email provider overrides Next…
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Critical 9.1
Punk::Plugin::TOTP versions before 0.05 for Perl allow the second-factor attempt limit to be reset by replaying an earlier session cookie because the challenge route counts failures in the session
Punk::Plugin::TOTP versions before 0.05 for Perl allow the second-factor attempt limit to be reset by replaying an earlier session cookie because the challenge route counts failures in the session. The POST handler on challenge_path keeps the failure count as…
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Critical 9.8
SiYuan kernel before 3.7.4 Unthrottled Brute-Force via API Token
SiYuan kernel versions before 3.7.4 contain an improper restriction of excessive authentication attempts vulnerability in the CheckAuth() middleware. The middleware accepts the API token (Conf.Api.Token) via an Authorization header (Token/Bearer) or a ?token=…
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Critical 9.8
SiYuan before v3.7.4 Authentication Bypass via HTTP Basic Auth
SiYuan before v3.7.4 improperly restricts excessive authentication attempts in the CheckAuth() middleware. The HTTP Basic Authentication branch, which guards nearly the entire /api/* surface, accepts the workspace access code (Conf.AccessAuthCode) as the Basi…
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Critical 9.1
Insufficient Authentication Brute Force Protection on Login Endpoint
IBM Langflow OSS 1.0.0 through 1.9.6 could allow a remote attacker to obtain unauthorized access to user accounts due to improper restriction of excessive authentication attempts.
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Critical 9.1
typemill - No Rate Limiting on Login Endpoint Enables Unlimited Password Brute-Force
Typemill's login endpoint (POST /tm/login, ControllerWebAuth::login) performs no rate-limiting, failed-attempt counting, or account lockout when captcha is disabled, which is the default configuration. An unauthenticated attacker can send unlimited password-g…
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Critical 9.8
OTP Bypass in Başbelen Group's Pause+ Mobile App
Improper restriction of excessive authentication attempts vulnerability in Başbelen Group Food Cafe Businesses Industry and Trade Ltd. Co. Pause+ Mobile App allows Authentication Bypass. This issue affects Pause+ Mobile App: from v1.0.6 before v1.5.
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Critical 9.8
Login with OTP <= 1.6 - Unauthenticated Authentication Bypass via OTP Brute Force
The Login with OTP plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including, 1.6. This is due to an incomplete fix for CVE-2024-11178: the rate-limit/lockout check added to `otpl_login_action()` was placed only inside t…
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Critical 9.8
iDS6 DSSPro Digital Signage System 6.2 CAPTCHA Security Bypass
iDS6 DSSPro Digital Signage System 6.2 contains a CAPTCHA security bypass vulnerability that allows attackers to bypass authentication by requesting the autoLoginVerifyCode object. Attackers can retrieve valid CAPTCHA codes via the login endpoint and use them…
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Critical 9.1
phpMyFAQ - Unauthenticated Two-Factor Authentication Brute-Force via /admin/check Endpoint
phpMyFAQ before 4.1.2 contains an improper restriction of excessive authentication attempts vulnerability in the /admin/check endpoint, which accepts arbitrary user-id parameters without session binding or rate limiting. Unauthenticated attackers can brute-fo…
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Critical 9.1
Outline has a rate limit bypass that allows brute force of email login OTP
Outline is a service that allows for collaborative documentation. Outline implements an Email OTP login flow for users not associated with an Identity Provider. Starting in version 0.86.0 and prior to version 1.6.0, Outline does not invalidate OTP codes based…
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Critical 9.1
Tandoor Recipes Vulnerable to Unrestricted Brute-Force via BasicAuthentication
Tandoor Recipes is an application for managing recipes, planning meals, and building shopping lists. In versions prior to 2.6.0, Tandoor Recipes configures Django REST Framework with BasicAuthentication as one of the default authentication backends. The AllAu…
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Critical 9.1
MinIO: LDAP login brute-force via user enumeration and missing rate limit
MinIO is a high-performance object storage system. Prior to RELEASE.2026-03-17T21-25-16Z, MinIO AIStor's STS (Security Token Service) AssumeRoleWithLDAPIdentity endpoint is vulnerable to LDAP credential brute-forcing due to two combined weaknesses: (1) distin…
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Critical 9.1
Incorrect Access Control via missing 2FA rate-limiting allowing unlimited brute-force retries and full MFA bypass with …
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Critical 9.2
Tenda W30E V2 Lacks Rate Limiting on Authentication
Shenzhen Tenda W30E V2 firmware versions up to and including V16.01.0.19(5037) do not enforce rate limiting or account lockout mechanisms on authentication endpoints. This allows attackers to perform unrestricted brute-force attempts against administrative cr…
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Critical 9.4
Improper Access Control in Birebirsoft's Sufirmam
Improper Restriction of Excessive Authentication Attempts, Weak Password Recovery Mechanism for Forgotten Password vulnerability in Birebirsoft Software and Technology Solutions Sufirmam allows Brute Force, Password Recovery Exploitation. This issue affects S…
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Critical 9.1
Improper Authentication in Restajet's Online Food Delivery System
Improper Restriction of Excessive Authentication Attempts vulnerability in Restajet Information Technologies Inc. Online Food Delivery System allows Password Recovery Exploitation. This issue affects Online Food Delivery System: through 19122025. NOTE: The ve…
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Critical 9.8
EPSON WebConfig and Epson Web Control for SEIKO EPSON Projector Products do not restrict excessive authentication attem…
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Critical 9.8
An issue was discovered in weijiang1994 university-bbs (aka Blogin) in commit 9e06bab430bfc729f27b4284ba7570db3b11ce84 …
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Critical 9.8CVE-2025-56221 Public exploit
A lack of rate limiting in the login mechanism of SigningHub v8.6.8 allows attackers to bypass authentication via a bru…
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Critical 9.8
Authentication Bypass in Akinsoft's MyRezzta
Improper Restriction of Excessive Authentication Attempts vulnerability in Akinsoft MyRezzta allows Authentication Bypass, Password Recovery Exploitation, Brute Force. This issue affects MyRezzta: from s2.03.01 before v2.05.01.
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Critical 9.8
Mail Login - Critical - Access bypass - SA-CONTRIB-2025-088
Improper Restriction of Excessive Authentication Attempts vulnerability in Drupal Mail Login allows Brute Force.This issue affects Mail Login: from 3.0.0 before 3.2.0, from 4.0.0 before 4.2.0.
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Critical 9.3
Authentication Bypass in Art-In Systems' Wi-Fi Cloud Hotspot
Improper Restriction of Excessive Authentication Attempts vulnerability in Art-in Bilişim Teknolojileri ve Yazılım Hizm. Tic. Ltd. Şti. Wi-Fi Cloud Hotspot allows Authentication Abuse, Authentication Bypass. This issue affects Wi-Fi Cloud Hotspot: before 30.0…
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Critical 9.4
Autoeastern Smart Keyless Entry System Replay Attack
Use of fixed learning codes, one code to lock the car and the other code to unlock it, in the Key Fob Transmitter in Cyclone Matrix TRF Smart Keyless Entry System, which allows a replay attack. Research was completed on the 2024 KIA Soluto. Attack confirmed …
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Critical 9.4
KIA-branded Aftermarket Generic Smart Keyless Entry System Replay Attack
Use of fixed learning codes, one code to lock the car and the other code to unlock it, the Key Fob Transmitter in KIA-branded Aftermarket Generic Smart Keyless Entry System, primarily distributed in Ecuador, which allows a replay attack. Manufacture is unknow…
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Critical 9.1
RAGFlow through 0.18.1 allows account takeover because it is possible to conduct successful brute-force attacks against…
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Critical 9.8
Flowring Technology Agentflow - Account Lockout Bypass
Agentflow from Flowring Technology has an Account Lockout Bypass vulnerability, allowing unauthenticated remote attackers to exploit this vulnerability to perform password brute force attack.
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Critical 9.8
A lack of rate limiting in the login page of Safe App version a3.0.9 allows attackers to bypass authentication via a br…
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Critical 9.8
Easy!Appointments Improper Restriction of Excessive Authentication Attempts
An issue in Alex Tselegidis EasyAppointments v.1.5.0 allows a remote attacker to escalate privileges via the index.php file.
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Critical 9.8
An issue in the BYD Dilink Headunit System v3.0 to v4.0 allows attackers to bypass authentication via a bruteforce atta…
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Critical 9.3
No limit on failed login attempts with Clinician Password or Serial Number Clinician Password on Life2000 Ventilator
There is no limit on the number of failed login attempts permitted with the Clinician Password or the Serial Number Clinician Password. An attacker could execute a brute-force attack to gain unauthorized access to the ventilator, and then make changes to devi…
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Critical 9.3
Brute Force Attack Vulnerability in Wave 2.0
This vulnerability exists in the Wave 2.0 due to missing restrictions for excessive failed authentication attempts on its API based login. A remote attacker could exploit this vulnerability by conducting a brute force attack against legitimate user OTP, MPIN …
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Critical 9.1
A lack of rate limiting in the OTP validation component of Digitory Multi Channel Integrated POS v1.0 allows attackers …
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Critical 9.3
User Enumeration vulnerability
This vulnerability exists in Shilpi Client Dashboard due to missing restrictions for incorrect login attempts on its API based login. A remote attacker could exploit this vulnerability by conducting a brute force attack on password, which could lead to gain u…