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.
CVE-2026-40586 (GCVE-0-2026-40586)
Vulnerability from cvelistv5 – Published: 2026-04-21 17:10 – Updated: 2026-04-21 19:04
VLAI
Title
blueprintUE: Login Endpoint Has No Rate Limiting, Lockout, or Brute-Force Protection
Summary
blueprintUE is a tool to help Unreal Engine developers. Prior to 4.2.0, the login form handler performs no throttling of any kind. Failed authentication attempts are processed at full network speed with no IP-based rate limiting, no per-account attempt counter, no temporary lockout, no progressive delay (Tarpit), and no CAPTCHA challenge. An attacker can submit an unlimited number of credential guesses. The password policy (10+ characters, mixed case, digit, special character) reduces the effective keyspace but does not prevent dictionary attacks, credential stuffing from breached databases, or targeted attacks against known users with predictable passwords. This vulnerability is fixed in 4.2.0.
Severity
7.5 (High)
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/blueprintue/blueprintue-self-h… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| blueprintue | blueprintue-self-hosted-edition |
Affected:
< 4.2.0
|
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CVE-2026-41037 (GCVE-0-2026-41037)
Vulnerability from cvelistv5 – Published: 2026-04-21 10:04 – Updated: 2026-04-21 13:19
VLAI
Title
Missing Rate Limiting Vulnerability in Quantum Networks Router QN-I-470
Summary
This vulnerability exists in Quantum Networks router due to missing rate limiting and CAPTCHA protection for failed login attempts in the web-based management interface. An attacker on the same network could exploit this vulnerability by performing brute force attacks against administrative credentials, leading to unauthorized access with root privileges on the targeted device.
Severity
CWE
- CWE-307 - Improper restriction of excessive authentication attempts
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cert-in.org.in/s2cMainServlet?pageid=… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Quantum Networks | Router QN-I-470 |
Affected:
at 6.1.1.B1
(custom)
|
Credits
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CVE-2026-41213 (GCVE-0-2026-41213)
Vulnerability from cvelistv5 – Published: 2026-04-23 18:33 – Updated: 2026-04-25 01:23
VLAI
Title
@node-oauth/oauth2-server: PKCE code_verifier ABNF not enforced in token exchange allows brute-force redemption of intercepted authorization codes
Summary
@node-oauth/oauth2-server is a module for implementing an OAuth2 server in Node.js. The token exchange path accepts RFC7636-invalid code_verifier values (including one-character strings) for S256 PKCE flows. Because short/weak verifiers are accepted and failed verifier attempts do not consume the authorization code, an attacker who intercepts an authorization code can brute-force code_verifier guesses online until token issuance succeeds.
Severity
5.9 (Medium)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/node-oauth/node-oauth2-server/… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| node-oauth | node-oauth2-server |
Affected:
< 5.3.0
|
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CVE-2026-41893 (GCVE-0-2026-41893)
Vulnerability from cvelistv5 – Published: 2026-05-09 19:12 – Updated: 2026-05-14 17:50
VLAI
Title
Signal K Server's WebSocket Login Endpoint Lacks Rate Limiting (Credential Brute-Force)
Summary
Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.25.0, the HTTP login endpoints (POST /login and POST /signalk/v1/auth/login) are protected by express-rate-limit (default: 100 attempts per 10-minute window, configurable via HTTP_RATE_LIMITS). The WebSocket login path — sending {login: {username, password}} messages over an established WebSocket connection — calls app.securityStrategy.login() directly without any rate limiting. An attacker can bypass HTTP rate limiting entirely by opening a WebSocket connection and attempting unlimited password guesses at the speed bcrypt allows (~20 attempts/sec with 10 salt rounds). This issue has been patched in version 2.25.0.
Severity
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/SignalK/signalk-server/securit… | x_refsource_CONFIRM |
| https://github.com/SignalK/signalk-server/pull/2568 | x_refsource_MISC |
| https://github.com/SignalK/signalk-server/commit/… | x_refsource_MISC |
| https://github.com/SignalK/signalk-server/release… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SignalK | signalk-server |
Affected:
< 2.25.0
|
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CVE-2026-43914 (GCVE-0-2026-43914)
Vulnerability from cvelistv5 – Published: 2026-05-11 22:03 – Updated: 2026-05-12 12:51
VLAI
Title
Vaultwarden: Brute-force protection bypass vulnerability
Summary
Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.35.4, there is a security vulnerability in Vaultwarden that allows bypassing the login brute-force protection if email 2fa is enabled. If email 2fa is enabled, the unprotected 2fa-function send_email_login (email.rs, api endpoint /api/two-factor/send-email-login) also acts as an oracle determining whether a username-password combination is correct. An attacker can abuse that endpoint to brute-force passwords without rate-limiting. This works even for users who don't have email 2fa configured. This vulnerability is fixed in 1.35.4.
Severity
7.3 (High)
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/dani-garcia/vaultwarden/securi… | x_refsource_CONFIRM |
| https://github.com/dani-garcia/vaultwarden/pull/6867 | x_refsource_MISC |
| https://github.com/dani-garcia/vaultwarden/releas… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| dani-garcia | vaultwarden |
Affected:
< 1.35.4
|
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CVE-2026-44195 (GCVE-0-2026-44195)
Vulnerability from cvelistv5 – Published: 2026-05-13 21:52 – Updated: 2026-05-14 13:46
VLAI
Title
OPNsense: Authentication lockout bypass
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.7, a logic flaw in the OPNsense lockout_handler allows an unauthenticated attacker to continuously reset the authentication failure counter for their IP address. By interjecting a crafted username containing a success keyword ("Accepted" or "Successful login") between normal brute-force attempts, an attacker can prevent the failure counter from ever reaching the lockout threshold. This vulnerability is fixed in 26.1.7.
Severity
5.3 (Medium)
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/opnsense/core/security/advisor… | x_refsource_CONFIRM |
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CVE-2026-45010 (GCVE-0-2026-45010)
Vulnerability from cvelistv5 – Published: 2026-05-15 18:36 – Updated: 2026-05-28 14:15
VLAI
Title
phpMyFAQ - Unauthenticated Two-Factor Authentication Brute-Force via /admin/check Endpoint
Summary
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-force any user's six-digit TOTP code by submitting POST requests with sequential token values, bypassing two-factor authentication to gain full administrative access.
Severity
9.1 (Critical)
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/thorsten/phpMyFAQ/security/adv… | vendor-advisory |
| https://www.vulncheck.com/advisories/phpmyfaq-una… | third-party-advisory |
Impacted products
Date Public
2026-04-28 00:00
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CVE-2026-6947 (GCVE-0-2026-6947)
Vulnerability from cvelistv5 – Published: 2026-04-24 03:46 – Updated: 2026-04-24 12:04
VLAI
Title
D-Link｜DWM-222W USB Wi-Fi Adapter - Brute-Force Protection Bypass
Summary
DWM-222W USB Wi-Fi Adapter developed by D-Link has a Brute-Force Protection Bypass vulnerability, allowing unauthenticated adjacent network attackers to bypass login attempt limits to perform brute-force attacks to gain control over the device.
Severity
CWE
- CWE-307 - Improper restriction of excessive authentication attempts
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.twcert.org.tw/tw/cp-132-10864-944b1-1.html | third-party-advisory |
| https://www.twcert.org.tw/en/cp-139-10865-de323-2.html | third-party-advisory |
Date Public
2026-04-24 03:44
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CVE-2026-7255 (GCVE-0-2026-7255)
Vulnerability from cvelistv5 – Published: 2026-05-12 03:22 – Updated: 2026-05-12 12:50 Unsupported When Assigned
VLAI
Summary
** UNSUPPORTED WHEN ASSIGNED ** An improper restriction of excessive authentication attempts vulnerability in the web management interface of Zyxel WRE6505 v2 firmware version V1.00(ABDV.3)C0 could allow an adjacent attacker on the LAN to brute-force the password and bypass authentication.
Severity
6.5 (Medium)
CWE
- CWE-307 - Improper restriction of excessive authentication attempts
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zyxel | WRE6505 v2 firmware |
Affected:
V1.00(ABDV.3)C0
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CVE-2026-7671 (GCVE-0-2026-7671)
Vulnerability from cvelistv5 – Published: 2026-05-02 23:30 – Updated: 2026-05-04 13:08
VLAI
Title
CodeWise Tornet Scooter Mobile App TwoFactor excessive authentication
Summary
A vulnerability has been found in CodeWise Tornet Scooter Mobile App 4.75 on iOS/Android. The impacted element is an unknown function of the file /TwoFactor. Such manipulation leads to improper restriction of excessive authentication attempts. The attack may be performed from remote. Attacks of this nature are highly complex. The exploitability is regarded as difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/360819 | vdb-entry |
| https://vuldb.com/vuln/360819/cti | signaturepermissions-required |
| https://vuldb.com/submit/799987 | third-party-advisory |
| https://drive.proton.me/urls/M0WFM4137W#MY0jA6pjHYPO | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| CodeWise | Tornet Scooter Mobile App |
Affected:
4.75
|
Credits
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Mitigation
Phase: Architecture and Design
Description:
- 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.
Mitigation ID: MIT-4
Phase: Architecture and Design
Strategy: Libraries or Frameworks
Description:
- 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]
CAPEC-16: Dictionary-based Password Attack
["An attacker tries each of the words in a dictionary as passwords to gain access to the system via some user's account. If the password chosen by the user was a word within the dictionary, this attack will be successful (in the absence of other mitigations). This is a specific instance of the password brute forcing attack pattern.", "Dictionary Attacks differ from similar attacks such as Password Spraying (CAPEC-565) and Credential Stuffing (CAPEC-600), since they leverage unknown username/password combinations and don't care about inducing account lockouts."]
CAPEC-49: Password Brute Forcing
An adversary tries every possible value for a password until they succeed. A brute force attack, if feasible computationally, will always be successful because it will essentially go through all possible passwords given the alphabet used (lower case letters, upper case letters, numbers, symbols, etc.) and the maximum length of the password.
CAPEC-560: Use of Known Domain Credentials
An adversary guesses or obtains (i.e. steals or purchases) legitimate credentials (e.g. userID/password) to achieve authentication and to perform authorized actions under the guise of an authenticated user or service.
CAPEC-565: Password Spraying
In a Password Spraying attack, an adversary tries a small list (e.g. 3-5) of common or expected passwords, often matching the target's complexity policy, against a known list of user accounts to gain valid credentials. The adversary tries a particular password for each user account, before moving onto the next password in the list. This approach assists the adversary in remaining undetected by avoiding rapid or frequent account lockouts. The adversary may then reattempt the process with additional passwords, once enough time has passed to prevent inducing a lockout.
CAPEC-600: Credential Stuffing
An adversary tries known username/password combinations against different systems, applications, or services to gain additional authenticated access. Credential Stuffing attacks rely upon the fact that many users leverage the same username/password combination for multiple systems, applications, and services.
CAPEC-652: Use of Known Kerberos Credentials
An adversary obtains (i.e. steals or purchases) legitimate Kerberos credentials (e.g. Kerberos service account userID/password or Kerberos Tickets) with the goal of achieving authenticated access to additional systems, applications, or services within the domain.
CAPEC-653: Use of Known Operating System Credentials
An adversary guesses or obtains (i.e. steals or purchases) legitimate operating system credentials (e.g. userID/password) to achieve authentication and to perform authorized actions on the system, under the guise of an authenticated user or service. This applies to any Operating System.