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-2026-33879 (GCVE-0-2026-33879)
Vulnerability from cvelistv5 – Published: 2026-03-27 20:31 – Updated: 2026-03-30 15:36
VLAI
Title
FLIP doesn't have rate limiting or brute-force protection on login
Summary
Federated Learning and Interoperability Platform (FLIP) is an open-source platform for federated training and evaluation of medical imaging AI models across healthcare institutions. The FLIP login page in versions 0.1.1 and prior has no rate limiting or CAPTCHA, enabling brute-force and credential-stuffing attacks. FLIP users are external to the organization, increasing credential reuse risk. As of time of publication, it is unclear if a patch is available.
Severity
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/londonaicentre/FLIP/security/a… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| londonaicentre | FLIP |
Affected:
<= 0.1.1
|
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CVE-2026-33935 (GCVE-0-2026-33935)
Vulnerability from cvelistv5 – Published: 2026-03-27 00:43 – Updated: 2026-03-27 20:02
VLAI
Title
MyTube has Unauthenticated Account Lockout via Shared Login Attempt State
Summary
MyTube is a self-hosted downloader and player for several video websites Prior to version 1.8.72, an unauthenticated attacker can lock out administrator and visitor accounts from password-based authentication by triggering failed login attempts. The application exposes three password verification endpoints, all of which are publicly accessible. All three endpoints share a single file-backed login attempt state stored in `login-attempts.json`. When any endpoint records a failed authentication attempt via `recordFailedAttempt()`, the shared login attempt state is updated, increasing the `failedAttempts` counter and adjusting the associated timestamps and cooldown values. Before verifying a password, each endpoint calls `canAttemptLogin()`. This function checks the shared JSON file to determine whether a cooldown period is active. If the cooldown has not expired, the request is rejected before the password is validated. Because the failed attempt counter and cooldown timer are globally shared, failed authentication attempts against any endpoint affect all other endpoints. An attacker can exploit this by repeatedly sending invalid authentication requests to any of these endpoints, incrementing the shared counter and waiting for the cooldown period between attempts. By doing so, the attacker can progressively increase the lockout duration until it reaches 24 hours, effectively preventing legitimate users from authenticating. Once the maximum lockout is reached, the attacker can maintain the denial of service indefinitely by waiting for the cooldown to expire and sending another failed attempt, which immediately triggers another 24-hour lockout if no successful login occurred in the meantime. Version 1.8.72 fixes the vulnerability.
Severity
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/franklioxygen/MyTube/security/… | x_refsource_CONFIRM |
| https://github.com/franklioxygen/MyTube/commit/4d… | x_refsource_MISC |
| https://github.com/franklioxygen/MyTube/commit/75… | x_refsource_MISC |
| https://github.com/franklioxygen/MyTube/commit/dd… | x_refsource_MISC |
| https://github.com/franklioxygen/MyTube/blob/9410… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| franklioxygen | MyTube |
Affected:
< 1.8.72
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CVE-2026-34505 (GCVE-0-2026-34505)
Vulnerability from cvelistv5 – Published: 2026-03-31 11:17 – Updated: 2026-03-31 17:58
VLAI
Title
OpenClaw < 2026.3.12 - Webhook Rate Limiting Bypass via Pre-Authentication Secret Validation
Summary
OpenClaw before 2026.3.12 applies rate limiting only after successful webhook authentication, allowing attackers to bypass rate limits and brute-force webhook secrets. Attackers can submit repeated authentication requests with invalid secrets without triggering rate limit responses, enabling systematic secret guessing and subsequent forged webhook submission.
Severity
6.5 (Medium)
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/openclaw/openclaw/security/adv… | third-party-advisory |
| https://www.vulncheck.com/advisories/openclaw-web… | third-party-advisory |
Impacted products
Date Public
2026-03-13 00:00
Credits
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CVE-2026-34508 (GCVE-0-2026-34508)
Vulnerability from cvelistv5 – Published: 2026-03-31 11:17 – Updated: 2026-04-01 13:50
VLAI
This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
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CVE-2026-35597 (GCVE-0-2026-35597)
Vulnerability from cvelistv5 – Published: 2026-04-10 16:03 – Updated: 2026-04-13 15:37
VLAI
Title
Vikunja Affected by TOTP Brute-Force Due to Non-Functional Account Lockout
Summary
Vikunja is an open-source self-hosted task management platform. Prior to 2.3.0, the TOTP failed-attempt lockout mechanism is non-functional due to a database transaction handling bug. When a TOTP validation fails, the login handler in pkg/routes/api/v1/login.go calls HandleFailedTOTPAuth and then unconditionally rolls back. HandleFailedTOTPAuth in pkg/user/totp.go uses an in-memory counter (key-value store) to track failed attempts. When the counter reaches 10, it calls user.SetStatus(s, StatusAccountLocked) on the same database session s. Because the login handler always rolls back after a TOTP failure, the StatusAccountLocked write is undone. The in-memory counter correctly increments past 10, so the lockout code executes on every subsequent attempt, but the database write is rolled back every time. This allows unlimited brute-force attempts against TOTP codes. This vulnerability is fixed in 2.3.0.
Severity
5.9 (Medium)
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/go-vikunja/vikunja/security/ad… | x_refsource_CONFIRM |
| https://github.com/go-vikunja/vikunja/pull/2576 | x_refsource_MISC |
| https://github.com/go-vikunja/vikunja/commit/6ca0… | x_refsource_MISC |
| https://github.com/go-vikunja/vikunja/releases/ta… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| go-vikunja | vikunja |
Affected:
< 2.3.0
|
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CVE-2026-35623 (GCVE-0-2026-35623)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:26 – Updated: 2026-04-10 15:55 X_Open Source
VLAI
Title
OpenClaw < 2026.3.25 - Brute-Force Attack via Missing Webhook Password Rate Limiting
Summary
OpenClaw before 2026.3.25 contains a missing rate limiting vulnerability in webhook authentication that allows attackers to brute-force weak webhook passwords without throttling. Remote attackers can repeatedly submit incorrect password guesses to the webhook endpoint to compromise authentication and gain unauthorized access.
Severity
4.8 (Medium)
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/openclaw/openclaw/security/adv… | third-party-advisory |
| https://github.com/openclaw/openclaw/commit/5e08c… | patch |
| https://www.vulncheck.com/advisories/openclaw-bru… | third-party-advisory |
Impacted products
Date Public
2026-03-26 00:00
Credits
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CVE-2026-35628 (GCVE-0-2026-35628)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:27 – Updated: 2026-04-13 18:15 X_Open Source
VLAI
Title
OpenClaw < 2026.3.25 - Brute-Force Attack via Missing Telegram Webhook Rate Limiting
Summary
OpenClaw before 2026.3.25 contains a missing rate limiting vulnerability in Telegram webhook authentication that allows attackers to brute-force weak webhook secrets. The vulnerability enables repeated authentication guesses without throttling, permitting attackers to systematically guess webhook secrets through brute-force attacks.
Severity
4.8 (Medium)
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/openclaw/openclaw/security/adv… | third-party-advisory |
| https://github.com/openclaw/openclaw/commit/c2c13… | patch |
| https://www.vulncheck.com/advisories/openclaw-bru… | third-party-advisory |
Impacted products
Date Public
2026-03-26 00:00
Credits
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CVE-2026-35646 (GCVE-0-2026-35646)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:27 – Updated: 2026-04-10 13:57 X_Open Source
VLAI
Title
OpenClaw < 2026.3.25 - Pre-Authentication Rate-Limit Bypass in Webhook Token Validation
Summary
OpenClaw before 2026.3.25 contains a pre-authentication rate-limit bypass vulnerability in webhook token validation that allows attackers to brute-force weak webhook secrets. The vulnerability exists because invalid webhook tokens are rejected without throttling repeated authentication attempts, enabling attackers to guess weak tokens through rapid successive requests.
Severity
4.8 (Medium)
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/openclaw/openclaw/security/adv… | third-party-advisory |
| https://github.com/openclaw/openclaw/commit/0b4d0… | patch |
| https://www.vulncheck.com/advisories/openclaw-pre… | third-party-advisory |
Impacted products
Date Public
2026-03-26 00:00
Credits
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CVE-2026-40485 (GCVE-0-2026-40485)
Vulnerability from cvelistv5 – Published: 2026-04-17 23:29 – Updated: 2026-04-20 13:36
VLAI
Title
ChurchCRM: Username Enumeration via Differential Response in Public Login API
Summary
ChurchCRM is an open-source church management system. In versions prior to 7.2.0, the public API login endpoint (/api/public/user/login) returns distinguishable HTTP response codes based on whether a username exists: 404 for non-existent users and 401 for valid users with incorrect passwords. An unauthenticated attacker can exploit this difference to enumerate valid usernames, with no rate limiting or account lockout to impede the process. This issue has been fixed in version 7.2.0.
Severity
5.3 (Medium)
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/ChurchCRM/CRM/security/advisor… | x_refsource_CONFIRM |
| https://github.com/ChurchCRM/CRM/pull/8607 | x_refsource_MISC |
| https://github.com/ChurchCRM/CRM/commit/214694eb8… | x_refsource_MISC |
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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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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.