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 8.1
Runtipi has a TOTP two-factor authentication bypass via unrestricted brute-force on `/api/auth/verify-totp`
Runtipi is a personal homeserver orchestrator. Prior to 4.8.1, The Runtipi /api/auth/verify-totp endpoint does not enforce any rate limiting, attempt counting, or account lockout mechanism. An attacker who has obtained a user's valid credentials (via phishing…
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Low 3.6
Improper Restriction of Excessive Authentication Attempts in github.com/anyproto/anytype-heart
Anytype Heart is the middleware library for Anytype. The challenge-based authentication for the local gRPC client API can be bypassed, allowing an attacker to gain access without the 4-digit code. This vulnerability is fixed in anytype-heart 0.48.4, anytype-c…
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Medium 5.3
OneUptime has WhatsApp Resend Verification Authorization Bypass
OneUptime is a solution for monitoring and managing online services. The resend-verification-code endpoint allows any authenticated user to trigger a verification code resend for any UserWhatsApp record by ID. Ownership is not validated (unlike the verify end…
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Low 3.4
An improper restriction of excessive authentication attempts vulnerability in Fortinet FortiAnalyzer 7.6.0 through 7.6.…
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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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Medium 5.3
OpenClaw's hooks count non-POST requests toward auth lockout
OpenClaw's hooks HTTP handler counted hook authentication failures before rejecting unsupported HTTP methods. An unauthenticated client could send repeated non-`POST` requests (for example `GET`) with an invalid token to consume the hook auth failure budget a…
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High 7.5
Everon api.everon.io 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 by suppressing or mis-routing legitimate charger telemetry, o…
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High 7.5
Mobiliti e-mobi.hu 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 by suppressing or mis-routing legitimate charger telemetry, o…
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High 7.5CVE-2026-27778 Public exploit
ePower epower.ie 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 by suppressing or mis-routing legitimate charger telemetry, o…
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Medium 6.0
Vaultwarden: 2FA Bypass on Protected Actions due to Faulty Rate Limit Enforcement
Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Vaultwarden versions 1.34.3 and prior are susceptible to a 2FA bypass when performing protected actions. An attacker who gains authenticated access to a …
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High 7.4
HomeBox has an Auth Rate Limit Bypass via IP Spoofing
HomeBox is a home inventory and organization system. Prior to 0.24.0, the authentication rate limiter (authRateLimiter) tracks failed attempts per client IP. It determines the client IP by reading, 1. X-Real-IP header, 2. First entry of X-Forwarded-For header…
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Medium 5.9
IBM DevOps Plan is vulnerable to Excessive Authentication Attempts
IBM DevOps Plan 3.0.0 through 3.0.5 uses an inadequate account lockout setting that could allow a remote attacker to brute force account credentials.
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Medium 5.3
calibre has IP Ban Bypass via X-Forwarded-For Header Spoofing
calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Prior to version 9.4.0, the calibre Content Server's brute-force protection mechanism uses a ban key derived from both `remote_addr` and the `X-Forwarded-For`…
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Medium 6.5
SODOLA SL902-SWTGW124AS <= 200.1.20 Improper Login Rate Limiting
SODOLA SL902-SWTGW124AS firmware versions through 200.1.20 contain an authentication bypass vulnerability that allows remote attackers to perform unlimited login attempts against the management interface. Attackers can conduct online password guessing attacks…
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High 7.5
Mobility46 mobility46.se 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 by suppressing or mis-routing legitimate charger telemetry, o…
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High 7.5
EV Energy ev.energy 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 by suppressing or mis-routing legitimate charger telemetry, o…
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High 7.5
SWITCH EV swtchenergy.com 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 by suppressing or mis-routing legitimate charger telemetry, o…
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High 7.5
EV2GO ev2go.io 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 by suppressing or mis-routing legitimate charger telemetry, o…
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High 7.5
CloudCharge cloudcharge.se 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 by suppressing or mis-routing legitimate charger telemetry, o…
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High 7.5
Chargemap chargemap.com 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 by suppressing or misrouting legitimate charger telemetry, or…
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Low 3.7
VLC for Android < 3.7.0 Remote Access OTP Authentication Bypass
VideoLAN VLC for Android prior to version 3.7.0 contains an authentication bypass in the Remote Access Server feature due to missing or insufficient rate limiting on one-time password (OTP) verification. The Remote Access Server uses a 4-digit OTP and does no…
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High 7.5
Binardat 10G08-0800GSM Network Switch Missing Login Rate Limiting
Binardat 10G08-0800GSM network switch firmware version V300SP10260209 and prior do not implement rate limiting or account lockout on failed login attempts, enabling brute-force attacks against user credentials.
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Medium 5.3
OTP Password Brute Forcing in DorukNet's Wispotter
Improper Restriction of Excessive Authentication Attempts, Improper Authentication vulnerability in Doruk Communication and Automation Industry and Trade Inc. Wispotter allows Password Brute Forcing, Brute Force. This issue affects Wispotter: from 1.0 before …
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High 7.5
Emmett has an Unhandled CookieError Exception Causing Denial of Service
Emmett is a framework designed to simplify your development process. Prior to 1.3.11, the cookies property in mmett_core.http.wrappers.Request does not handle CookieError exceptions when parsing malformed Cookie headers. This allows unauthenticated attackers …
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Low 3.7
Tasin1025 SwiftBuy login.php excessive authentication
A security flaw has been discovered in Tasin1025 SwiftBuy up to 0f5011372e8d1d7edfd642d57d721c9fadc54ec7. Affected by this vulnerability is an unknown functionality of the file /login.php. Performing a manipulation results in improper restriction of excessive…
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High 7.5
Moodle: moodle: brute-force facilitation due to missing rate limiting in confirmation email service
A flaw was found in Moodle. A remote attacker could exploit a lack of proper rate limiting in the confirmation email service. This vulnerability allows attackers to more easily enumerate or guess user credentials, facilitating brute-force attacks against user…
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Low 3.7
D-Link DIR-823X Login sub_40AC74 excessive authentication
A vulnerability was identified in D-Link DIR-823X 250416. This vulnerability affects the function sub_40AC74 of the component Login. Such manipulation leads to improper restriction of excessive authentication attempts. The attack may be performed from remote.…
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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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Low 2.0
Beetel 777VR1 UART excessive authentication
A security vulnerability has been detected in Beetel 777VR1 up to 01.00.09/01.00.09_55. This issue affects some unknown processing of the component UART Interface. The manipulation leads to improper restriction of excessive authentication attempts. It is poss…
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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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High 7.5
EVMAPA Improper Restriction of Excessive Authentication Attempts
This vulnerability arises because there are no limitations on the number of authentication attempts a user can make. An attacker can exploit this weakness by continuously sending authentication requests, leading to a denial-of-service (DoS) condition. This ca…
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High 8.1
Dell PowerScale OneFS versions prior to 9.13.0.0 contains an improper restriction of excessive authentication attempts …
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Medium 6.9
OpenProject has no protection against brute-force attacks in the Change Password function
OpenProject is an open-source, web-based project management software. Prior to version 16.6.2, OpenProject’s unauthenticated password-change endpoint (/account/change_password) was not protected by the same brute-force safeguards that apply to the normal logi…
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Medium 5.1
The LuCI web interface on Gl Inet GL.Inet AX1800 Version 4.6.4 & 4.6.8 are vulnerable. Fix available in version 4.8.2 G…
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Medium 6.5
An issue in GL Inet GL.Inet AX1800 Version 4.6.4 & 4.6.8 are vulnerable. GL.Inet AX1800 Version 4.6.4 & 4.6.8 in the GL…
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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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Medium 6.5CVE-2025-65427 Public exploit
An issue was discovered in Dbit N300 T1 Pro Easy Setup Wireless Wi-Fi Router on firmware version V1.0.0 does not implem…
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Medium 6.9
Misskey has a login rate limit bypass via spoofed X-Forwarded-For header
Misskey is an open source, federated social media platform. Attackers who use an untrusted reverse proxy or not using a reverse proxy at all can bypass IP rate limiting by adding a forged X-Forwarded-For header. Starting with version 2025.9.1, an option (`tru…
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Medium 6.3CVE-2025-66204 Public exploit
WBCE CMS allows brute-force protection bypass using X-Forwarded-For header
WBCE CMS is a content management system. Version 1.6.4 contains a brute-force protection bypass where an attacker can indefinitely reset the counter by modifying `X-Forwarded-For` on each request, gaining unlimited password guessing attempts, effectively bypa…
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High 8.1
Improper Restriction of Excessive Authentication Attempts vulnerability in CIRCL Vulnerability-Lookup
In affected versions, vulnerability-lookup did not track or limit failed One-Time Password (OTP) attempts during Two-Factor Authentication (2FA) verification. An attacker who already knew or guessed a valid username and password could submit an arbitrary numb…