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
560 results · Feed
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Low 3.7
SiteServer SSCMS Admin-Login CAPTCHA LoginController.Submit.cs LoginController.Submit excessive authentication
A vulnerability was identified in SiteServer SSCMS up to 7.1.3/7.2.1/7.4.0. This issue affects the function LoginController.Submit of the file src/SSCMS.Web/Controllers/Admin/LoginController.Submit.cs of the component Admin-Login CAPTCHA. Such manipulation of…
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Medium 5.9
Vikunja before 2.7.1 Password Brute-Force via TOTP Disable Endpoint
Vikunja before 2.7.1 contains an improper restriction of excessive authentication attempts vulnerability that allows session holders to brute-force account passwords via unthrottled re-authentication endpoints. Attackers with a stolen session can guess the pa…
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High 8.3
Hisense VIDAA Smart TV MQTT Broker Authentication Bypass
Hisense VIDAA Smart TV firmware V0000.01.00a.P0220 contains an authentication bypass vulnerability in its remote-control MQTT broker on TCP port 36669, which accepts publicly documented default credentials and an ineffective 4-digit pairing PIN with no rate l…
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Medium 5.3
HCL AION is affected by multiple security vulnerabilities.
HCL AION is affected by a vulnerability where the account lockout mechanism did not sufficiently restrict repeated failed login attempts, allowing an attacker to make a large number of password guesses against a user account. This may increase the risk of acc…
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Low 3.7
Campcodes Bitcoin Wallet System ForgotPasswordController.php random_int excessive authentication
A flaw has been found in Campcodes Bitcoin Wallet System 1.0. This affects the function random_int of the file core/app/Http/Controllers/Auth/ForgotPasswordController.php. This manipulation causes improper restriction of excessive authentication attempts. Rem…
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Medium 5.3
BlueprintUE Self-Hosted Edition 4.2.0 before 4.3.4 Login Rate Limit Bypass
BlueprintUE Self-Hosted Edition 4.2.0 before 4.3.4 contains a login rate limit bypass vulnerability in LoginMiddleware.php that keys failed-login counters on case-sensitive usernames. Unauthenticated attackers can vary username casing against case-insensitive…
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Medium 5.9
ProSoft ICX35 Login Lockout Bypass via Client-Side Cookies
ProSoft Technology ICX35 devices (X35-HWC-A and ICX35-HWC-E) contain a login lockout bypass in the integrated module web page. The account lockout mechanism that restricts repeated failed authentication attempts is enforced in client-side JavaScript, so a rem…
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Low 3.7
miroslavpejic85 MiroTalk P2P Room Action server.js checkPassword excessive authentication
A vulnerability was found in miroslavpejic85 MiroTalk P2P up to 2.0.87. This vulnerability affects the function checkPassword of the file app/src/server.js of the component Room Action Handler. The manipulation results in improper restriction of excessive aut…
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Medium 6.3
AshAuthentication brute_force_strategy does not limit sign-in and request actions defined on the resource
Improper Restriction of Excessive Authentication Attempts vulnerability in team-alembic ash_authentication allows an unauthenticated attacker to guess passwords and one-time passwords without limit. The password, magic link and OTP strategies enforce brute_fo…
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High 8.1
pgAdmin 4: The failed login limit can be bypassed, and Flask-Security's own views skip pgAdmin's login and password checks
In server mode pgAdmin 4 locks an internal account after MAX_LOGIN_ATTEMPTS failed logins (3 by default). The limit could be bypassed, giving an unauthenticated attacker an unlimited number of password guesses against any internal account, including the admin…
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Medium 5.4
Dell OpenManage Enterprise, versions prior to 4.8.0, contains an Improper Restriction of Excessive Authentication Attem…
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Medium 5.3
Missing brute-force protection for web interface
HTTP basic auth enforces no retry limit or backoff. Combined with the default service password, the keyspace is exhaustible.
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Medium 5.3
Shield - Moderately critical - Access bypass - SA-CONTRIB-2026-248
Improper Restriction of Excessive Authentication Attempts vulnerability in Drupal Shield allows Brute Force. This issue affects Shield versions: from 0.0.0 to 1.9.0.
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Medium 5.3
OTP Brute-Force Account Takeover in Idvlabs Software's Ontime
Improper restriction of excessive authentication attempts vulnerability in İdvlabs Software and Consulting Services Inc. Ontime allows Brute Force. This issue affects Ontime: through 2026-10-27. NOTE: The vendor was contacted early about this disclosure but …
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Medium 6.3
Lack of rate-limiting in 2fa code check mechanism in twofactor_gauthenticator
The twofactor_gauthenticator plugin for Roundcube is vulnerable to brute-forcing of the second-factor code. Due to the lack of rate limiting, an attacker who obtains user's password can submit arbitrary 6-digit codes, resulting in second-factor bypass and una…
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Low 2.3
Improper Restriction of Excessive Authentication Attempts in boneIO
boneIO Black does not limit authentication attempts on its web interface (POST /api/login) or SSH service, and does not enforce password complexity. An unauthenticated remote attacker can make unlimited brute-force login attempts, potentially compromising use…
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Low 3.7
NocoDB signup validatePassword excessive authentication
A weakness has been identified in NocoDB up to 2026.07.0. The affected element is the function validatePassword of the file /auth/user/signup. Executing a manipulation can lead to improper restriction of excessive authentication attempts. It is possible to la…
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Low 3.7
YunaiV/zhijiantianya ruoyi-vue-pro SMS Code Verification SmsCodeServiceImpl.java SmsCodeServiceImpl.validateSmsCode0 excessive authentication
A flaw has been found in YunaiV/zhijiantianya ruoyi-vue-pro up to 2026.09. The impacted element is the function SmsCodeServiceImpl.validateSmsCode0 of the file /service/sms/SmsCodeServiceImpl.java of the component SMS Code Verification. This manipulation caus…
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High 7.5
OpenReception: one tenant's throttle row disables the PIN brute-force throttle for the same identifier in other tenants
OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. In versions 2.1.0 and prior, a returning client's six-digit booking PIN can be brute-forced online in the victim tenant. A successful guess yields the …
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Medium 5.9
ApostropheCMS: No Attempt Throttling on Authenticated Password-Change Endpoint Enables Unlimited Current-Password Guessing
ApostropheCMS is an open-source Node.js content management system. Prior to 4.33.0, the self-service password-change endpoint verifies the current password but does not use the login module’s failed-attempt counter, throttle, delay, or lockout mechanism. An a…
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High 8.2
A vulnerability in the proprietary protocol could allow an attacker to brute force the administrator password without r…
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Medium 4.8
Password Brute Force via Password History Validation in Multiple WSO2 Products Allows User Account Discovery
The RemoteUserStoreManagerService does not sufficiently validate password change attempts when the password history validation feature is enabled. This oversight allows an attacker to repeatedly attempt password guesses for a user account without being adequa…
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Medium 6.9
FOSSBilling: Unauthenticated client account enumeration via guest signup endpoint
FOSSBilling is an open source billing and client-management platform. From 0.1.0 until 0.8.7, the unauthenticated POST /api/guest/client/create endpoint reveals whether a submitted email belongs to a registered client because guest signup returns a distinct u…
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Low 3.7
OpenCATS Career Portal CareersUI.php processLogin excessive authentication
A flaw has been found in OpenCATS 0.10.0. Affected is the function processLogin of the file modules/careers/CareersUI.php of the component Career Portal. This manipulation of the argument applyToJobSubAction causes improper restriction of excessive authentica…
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Medium 6.5
phpMyFAQ 4.2.0-alpha before 4.2.0-beta Missing Rate Limiting on Password-Reset Endpoints
phpMyFAQ 4.2.0-alpha before 4.2.0-beta lacks effective rate limiting on the unauthenticated user/password/update and user/password/reset endpoints. Unauthenticated attackers can send unlimited reset requests to flood a registered user's inbox with reset email…
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Medium 6.5
phpMyFAQ 4.2.0-alpha.2 before 4.2.0-beta 2FA Brute-Force via remove-twofactor Endpoint
phpMyFAQ from 4.2.0-alpha.2 before 4.2.0-beta lacks brute-force lockout in the removeTwofactorConfig() 2FA removal endpoint, allowing authenticated attackers to guess TOTP codes without limit. Attackers holding a hijacked session and CSRF token can repeatedly…
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High 7.4
Course-tencent-cloud through 2.0.1 Verification Code Brute Force Account Takeover
Course-tencent-cloud through 2.0.1 contains an improper restriction of authentication attempts vulnerability that allows unauthenticated attackers to brute force 6-digit SMS/email verification codes, which are never invalidated or attempt-limited. Attackers w…
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High 7.4
MacCMS v10 through 2026.1000.4056 Account Takeover via Password Recovery Brute-Force
MacCMS v10 through 2026.1000.4056 does not limit attempts on the six-digit password recovery code, allowing unauthenticated attackers to take over member accounts. Attackers knowing a victim's email or phone can request a code and brute-force findpass_reset t…
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High 7.5
Lychee: Missing rate limiting on album password unlock endpoint allows brute-force attacks
Lychee is a free, open-source photo-management tool. Prior to 7.6.1, POST /api/v2/Album::unlock has no throttle, attempt counter, backoff, CAPTCHA, or lockout. UnlockAlbumRequest::authorize() permits any caller to submit attempts, and app/Actions/Album/Unlock…
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Low 3.7
Better Auth drizzle-adapter 1.6.17 before 1.7.7 Rate Limit Bypass via Race Condition
Better Auth @better-auth/drizzle-adapter and better-auth from 1.6.17 before 1.7.7, and @better-auth/kysely-adapter from 1.6.17 before 1.7.0, contain a race condition in database-backed rate limiting on PostgreSQL where the limit check is not atomic with the c…
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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/…