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
570 results · Feed
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High 8.1CVE-2026-103977 Public exploit
FileRise: Session-scoped TOTP rate limiting permits repeated verification attempts
FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.23.0, FileRise stores failed TOTP verification attempts in $_SESSION. An attacker who already possesses a target account's valid primary credent…
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Medium 6.5
FileRise: Rate Limiting Bypass via Username Rotation Enables Unlimited Password Spraying
FileRise is a self-hosted web-based file manager with multi-file upload, editing, and batch operations. Prior to 3.21.0, FileRise tracks failed logins only by the combination of source IP address and username. A remote unauthenticated attacker can rotate user…
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High 8.1
Databasus 3.7.0 through 3.61.0 Account Takeover via Password Reset Brute-Force
Databasus 3.7.0 through 3.61.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to brute-force password reset codes via POST /api/v1/users/reset-password. Attackers can request a six-digit code for a known email, then gues…
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Low 3.7
Zimbra Collaboration Suite GraphQL Batched Authentication Bypasses Pre-Auth Rate Limiting
An authentication rate-limit bypass in Zimbra Collaboration Suite 10.1.0 through 10.1.21 allows unauthenticated attackers to make repeated password guesses through GraphQL without incrementing Zimbra’s source-IP failure counter. GraphQL aliases allow multiple…
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Medium 5.3
Wazuh 4.0.0 before 4.14.8 API Brute-Force Protection Bypass via Race Condition
Wazuh from 4.0.0 before 4.14.8 contains a race condition in API login throttling that allows unauthenticated attackers to bypass max_login_attempts by sending concurrent requests. Attackers can fire concurrent login bursts to the authenticate and run_as endpo…
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Medium 6.5
FreeRDP 3.0.0 before 3.32.0 PIN Brute-Force via Virtual Smartcard
FreeRDP 3.0.0 before 3.32.0 contains an improper restriction of excessive authentication attempts in its virtual smartcard GIDS implementation, which stores the PIN retry counter per-handle. A malicious RDP server can exhaust the counter with VERIFY APDUs, th…
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Medium 5.3
IBM i Information Disclosure
IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote attacker to perform brute-force attacks to obtain credentials due to improper authentication.
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High 7.4
Netherman Portal del Hermano Account Takeover via Password Reset Oracle
Netherman Portal del Hermano (portaldelhermano.es) before 2026-10-06 contains a broken authentication vulnerability in its password-recovery flow at the POST /password/create-access and POST /password/email endpoints, allowing unauthenticated attackers to tak…
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Medium 6.5
AniWorld Downloader before 5.3.0 WebUI Login Brute Force via /login
AniWorld Downloader before 5.3.0 contains an improper restriction of authentication attempts vulnerability in the WebUI /login POST handler that allows unauthenticated attackers to guess passwords without throttling. Attackers can enumerate usernames through …
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Medium 6.5
Pingvin Share X before 1.22.0 Ineffective Authentication Rate Limiting via Throttler TTL
Pingvin Share X before 1.22.0 contains an ineffective rate limiting vulnerability because throttler TTL values specified in seconds are interpreted as milliseconds. Unauthenticated attackers can send effectively unthrottled requests to /api/auth/signIn, /api/…
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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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High 7.4
Dell Secure Connect Gateway (SCG) Policy Manager, versions prior to 5.34.00.16, contains an Improper Restriction of Exc…
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Medium 6.8
pH7Builder before 18.5.0 2FA Brute Force via VerificationCodeFormProcess.php
pH7Builder (pH7 Social Dating CMS) before 18.5.0 contains an improper restriction of authentication attempts vulnerability that allows attackers to bypass two-factor authentication by guessing TOTP codes without limits. Attackers who know an account password …
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Medium 6.9
Payload: Unauthenticated account-lockout denial of service
Payload is a free and open source headless content management system. In versions before 3.90.0 and canary versions before 4.0.0-canary.34, an unauthenticated attacker who knows an account email address or username can abuse the account lockout mechanism of a…
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High 7.4
PLANKA 2.2.0 through 2.2.1 TOTP Brute Force via verify-totp Endpoint
PLANKA 2.2.0 through 2.2.1 fails to limit incorrect TOTP codes submitted to POST /api/access-tokens/verify-totp, allowing attackers to brute force two-factor authentication codes. Attackers who know a user's password can reuse the ten-minute pending token to …
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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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Low 3.7
linlinjava litemall Login Endpoint AdminAuthController.java excessive authentication
A vulnerability was detected in linlinjava litemall up to 1.8.0. This affects an unknown part of the file litemall-admin-api/src/main/java/org/linlinjava/litemall/admin/web/AdminAuthController.java of the component Login Endpoint. The manipulation results in …
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High 7.5
Monta monta.app Improper Restriction of Excessive Authentication Attempts
The WebSocket Application Programming Interface lacks restrictions on the number of authentication requests. This absence of rate limiting may allow an attacker to conduct denial-of-service attacks or brute-force attacks to gain unauthorized access.
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Low 3.7
Russh: Configured server auth-attempt cap is not enforced in the USERAUTH_REQUEST runtime path
Russh is a Rust SSH client and server library. Prior to 0.62.6, the USERAUTH_REQUEST path reached from server::run_stream in russh/src/server/encrypted.rs increments self.common.auth_attempts but never compares it with server::Config.max_auth_attempts. An una…
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High 7.4CVE-2026-102334 Public exploit
Nginx Proxy Manager through 2.16.0 Missing Brute-Force Protection
Nginx Proxy Manager through 2.16.0 lacks rate-limiting on authentication endpoints, allowing unauthenticated attackers to make unlimited password guesses against any account. Attackers can brute-force login credentials via POST /api/tokens and subsequently gu…
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Medium 6.5
stoatchat before 0.15.5 MFA Brute Force via Insufficient Rate Limiting
stoatchat before 0.15.5 fails to enforce account-level attempt limits on MFA login challenges, allowing attackers who know a password to guess TOTP codes with only IP-based rate limiting. Attackers can reuse MFA challenge tickets across multiple failed attemp…
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Medium 6.5
Flame through 2.4.0 Brute-Force Attack via Login Endpoint
Flame through 2.4.0 contains an improper restriction of excessive authentication attempts vulnerability in the POST /api/auth login endpoint that allows unauthenticated attackers to brute-force the admin password. Attackers can submit unlimited password guess…
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High 7.7
GLPI: Missing Rate Limiting on Login and TOTP Verification — Account Takeover via Brute Force
GLPI is a free asset and IT management software package. From 11.0.0 until 11.0.8, the time-based one-time password verification endpoint does not limit failed submissions per user. An attacker who has obtained a user's primary authentication credentials can …
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Medium 6.9
Zammad: Missing rate limiting allows password brute-forcing during two-factor login
Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, the two-factor login step let an attacker try unlimited password guesses for any account without triggering Zammad's normal lockout or rate limiting. The response also reveale…
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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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Medium 5.3
9Router: Login Brute-Force Lockout Bypass via Spoofable X-9r-Real-Ip Header
9Router is an AI router & token saver. Prior to 0.5.6, 9Router deployments that allow requests to reach Next.js without the sanitizing custom-server.js wrapper use the client-supplied X-9r-Real-Ip value as the bucket key in getClientIp, checkLock, and recordF…
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Medium 6.5
Improper Restriction of Excessive Authentication Attempts in the administration login of pH7Software pH7Builder (pH7 So…
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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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Medium 6.8
@sync-in/server vulnerable to TOTP Brute-Force via `POST /api/app/sync/register`
Sync-in Server is an open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.4.0, `POST /api/app/sync/register` accepts credentials and a TOTP code to register a desktop sync client. On a failed TOTP, `SyncClientsManager…
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Medium 5.3
Tinyauth: Unauthenticated login attempts can trigger global login lockdown denial of service
Tinyauth is an authentication and authorization server. Prior to 5.1.0, an unauthenticated remote attacker can send POST /api/user/login requests with 257 distinct nonexistent usernames to fill MaxLoginAttemptRecords and activate a global login lockdown. inte…
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Low 3.7
Saleor throttling.py get_client_ip excessive authentication
A vulnerability was determined in Saleor up to 3.20.118/3.21.54/3.22.47/3.23.14. This vulnerability affects the function get_client_ip of the file saleor/account/throttling.py. Executing a manipulation can lead to improper restriction of excessive authenticat…
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Low 3.7
An improper restriction of excessive authentication attempts vulnerability in Auto block in Synology DiskStation Manage…
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Medium 6.5
HCL BigFix Service Management is affected by multiple security vulnerabilities.
HCL BigFix Service Management is affected by an Improper Authentication validation vulnerability related to inadequate account lockouts, which could allow an unauthenticated attacker to execute sustained brute-force attacks against the login interface, result…
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Medium 6.5
AVideo through 29.0 Rate Limit Bypass via Non-Atomic Counter Increment
AVideo through 29.0 contains a race condition in the enforceRateLimit() function that fails to atomically increment rate limit counters, allowing attackers to bypass all rate limits including login brute-force protection by issuing concurrent requests. Attack…
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High 7.5
Vikunja before 2.6.0 Authentication Bypass via CalDAV BasicAuth
Vikunja before 2.6.0 contains an authentication bypass vulnerability in CalDAV BasicAuth endpoints that lack rate limiting protection. Remote unauthenticated attackers can issue unbounded credential-guessing requests against /dav, /.well-known, and /feeds rou…
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High 7.5
Vikunja before 2.6.0 Authentication Bypass via Unthrottled API
Vikunja versions before 2.6.0 fail to apply rate limiting to /api/v2 public authentication endpoints including login, register, password-reset, and OAuth token routes. Remote unauthenticated attackers can perform unbounded credential guessing, account enumera…
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Medium 6.3
Payara Server is vulnerable to brute-force login attacks due to the absence of a limit on failed login attempts
By default, Payara Server does not limit the number of failed login attempts, which can leave it vulnerable to brute force login attacks. To mitigate this, Payara Server includes built-in automatic attack protection. For configuration details, see https://do…
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Medium 6.9
Craft Commerce: Coupon Code Brute-Force via Rate Limit Bypass
Craft Commerce is an ecommerce platform for Craft CMS. From 4.0.0 until 4.11.2 and 5.6.5, CartController in src/controllers/CartController.php activates its RateLimiter only when the number POST or GET parameter is supplied. An unauthenticated attacker can su…
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High 7.5
Kingdom Communication Associated｜Smart Video Intercom System - Missing Burte-force Protection
Smart Video Intercom System developed by Kingdom Communication Associated has a Missing Brute-force Protection vulnerability. Unauthenticated remote attackers can gain access to valid accounts through a large number of login attempts.
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Medium 6.5
Keycloak-services: keycloak-services: device authorization grant issues tokens to brute-force-locked accounts
A flaw was found in the Device Authorization Grant flow of Keycloak, an identity and access management solution. The issue occurs because the token redemption process fails to check if a user account is currently locked due to brute-force protection. If an at…