Common Weakness Enumeration
CWE-307
AllowedImproper Restriction of Excessive Authentication Attempts
Abstraction: Base · Status: Draft
The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame.
967 vulnerabilities reference this CWE, most recent first.
CVE-2026-21755 (GCVE-0-2026-21755)
Vulnerability from cvelistv5 – Published: 2026-08-24 14:16 – Updated: 2026-08-24 15:07
VLAI
EPSS
VEX
Title
HCL Hive is affected by a missing rate limit
Summary
HCL Hive is affected by a missing rate limit which could allow an attacker unauthorized access via brute-force or credential stuffing attacks, or cause a denial of service.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-24 15:01 UTC
CWE
- CWE-307 - Improper restriction of excessive authentication attempts
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| HCLSoftware | HCL Hive |
Affected:
1.0
|
Date Public
2026-08-24 12:10
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CVE-2026-20882 (GCVE-0-2026-20882)
Vulnerability from cvelistv5 – Published: 2026-03-06 15:05 – Updated: 2026-03-10 17:59
VLAI
EPSS
VEX
Title
Mobiliti e-mobi.hu Improper Restriction of Excessive Authentication Attempts
Summary
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, or conduct brute-force attacks to gain unauthorized access.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-10 17:48 UTC
Assigner
References
Impacted products
Date Public
2026-03-04 05:18
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CVE-2026-20792 (GCVE-0-2026-20792)
Vulnerability from cvelistv5 – Published: 2026-02-26 23:06 – Updated: 2026-03-05 19:42
VLAI
EPSS
VEX
Title
Chargemap chargemap.com Improper Restriction of Excessive Authentication Attempts
Summary
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 conduct brute-force
attacks to gain unauthorized access.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-02 20:40 UTC
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Chargemap | chargemap.com |
Affected:
All versions
|
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GCVE-1-2026-20131 (CVE-2026-56450)
Vulnerability from gna-1 – Published: 2026-06-22 13:02 – Updated: 2026-06-22 13:02
VLAI
EPSS
VEX
Title
AIL Framework - Missing Rate Limiting Enables Brute-Force Attacks Against Two-Factor Authentication Codes
Summary
AIL did not restrict repeated failed attempts to verify a two-factor authentication (OTP) code. An attacker who had reached the 2FA verification step, such as after successfully completing the password-authentication stage, could submit an unlimited number of OTP guesses. This could enable brute-force guessing of a valid code and bypass the intended second authentication factor, resulting in unauthorized account access.
The patch introduces per-user failed-OTP tracking, blocks verification after 30 failed attempts for one hour, clears the counter after a successful OTP verification, and provides administrator recovery actions to purge affected lockouts.
Severity
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/ail-project/ail-framework/comm… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ail project | ail framework |
Affected:
0 , ≤ 6.8.0
(semver)
|
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CVE-2026-19898 (GCVE-0-2026-19898)
Vulnerability from cvelistv5 – Published: 2026-08-15 15:45 – Updated: 2026-08-18 13:38 X_Open Source
VLAI
EPSS
VEX
Title
VictoriaMetrics VMAuth Authentication Endpoint main.go requestHandler excessive authentication
Summary
A vulnerability was found in VictoriaMetrics up to 1.146.0. Impacted is the function requestHandler of the file app/vmauth/main.go of the component VMAuth Authentication Endpoint. Performing a manipulation results in improper restriction of excessive authentication attempts. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is considered difficult. The exploit has been made public and could be used. Upgrading to version 1.147.0 is recommended to address this issue. The patch is named 119ba0fb5be8024d50c5ba946599b2e69e8803ea. Upgrading the affected component is recommended.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 13:24 UTC
CWE
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/390088 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/390088/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-19898 | third-party-advisory |
| https://vuldb.com/submit/870679 | third-party-advisory |
| https://github.com/VictoriaMetrics/VictoriaMetric… | exploitissue-tracking |
| https://github.com/VictoriaMetrics/VictoriaMetric… | broken-link |
| https://github.com/VictoriaMetrics/VictoriaMetric… | patch |
| https://github.com/VictoriaMetrics/VictoriaMetric… | patch |
| https://github.com/VictoriaMetrics/VictoriaMetrics/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | VictoriaMetrics |
Affected:
1.146
Unaffected: 1.147.0 cpe:2.3:a:victoriametrics:victoriametrics:*:*:*:*:*:*:*:* |
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CVE-2026-19897 (GCVE-0-2026-19897)
Vulnerability from cvelistv5 – Published: 2026-08-15 15:30 – Updated: 2026-08-17 15:50
VLAI
EPSS
VEX
Title
mangroup dtale Login Endpoint auth.py login excessive authentication
Summary
A vulnerability has been found in mangroup dtale up to 3.22.0. This issue affects the function Login of the file dtale/auth.py of the component Login Endpoint. Such manipulation leads to improper restriction of excessive authentication attempts. The attack can be executed remotely. This attack is characterized by high complexity. The exploitability is assessed as difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 15:49 UTC
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/390087 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/390087/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-19897 | third-party-advisory |
| https://vuldb.com/submit/870673 | third-party-advisory |
| https://github.com/man-group/dtale/issues/961 | exploitissue-tracking |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mangroup | dtale |
Affected:
3.0
Affected: 3.1 Affected: 3.2 Affected: 3.3 Affected: 3.4 Affected: 3.5 Affected: 3.6 Affected: 3.7 Affected: 3.8 Affected: 3.9 Affected: 3.10 Affected: 3.11 Affected: 3.12 Affected: 3.13 Affected: 3.14 Affected: 3.15 Affected: 3.16 Affected: 3.17 Affected: 3.18 Affected: 3.19 Affected: 3.20 Affected: 3.21 Affected: 3.22.0 cpe:2.3:a:mangroup:dtale:*:*:*:*:*:*:*:* |
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CVE-2026-19895 (GCVE-0-2026-19895)
Vulnerability from cvelistv5 – Published: 2026-08-15 13:30 – Updated: 2026-08-17 17:41
VLAI
EPSS
VEX
Title
opensourcepos Open Source Point of Sale Login Endpoint Filters.php index excessive authentication
Summary
A vulnerability was detected in opensourcepos Open Source Point of Sale up to 3.4.2. This affects the function Login::index of the file app/Config/Filters.php of the component Login Endpoint. The manipulation results in improper restriction of excessive authentication attempts. The attack may be launched remotely. The attack requires a high level of complexity. It is indicated that the exploitability is difficult. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 17:41 UTC
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/390085 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/390085/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-19895 | third-party-advisory |
| https://vuldb.com/submit/870664 | third-party-advisory |
| https://github.com/opensourcepos/opensourcepos/is… | exploitissue-tracking |
| https://github.com/purnadika/opensourcepos/commit… | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| opensourcepos | Open Source Point of Sale |
Affected:
3.4.0
Affected: 3.4.1 Affected: 3.4.2 cpe:2.3:a:opensourcepos:open_source_point_of_sale:*:*:*:*:*:*:*:* |
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CVE-2026-19297 (GCVE-0-2026-19297)
Vulnerability from cvelistv5 – Published: 2026-08-13 20:46 – Updated: 2026-08-15 03:55
VLAI
EPSS
VEX
Title
Insufficient Authentication Brute Force Protection on Login Endpoint
Summary
IBM Langflow OSS 1.0.0 through 1.9.6 could allow a remote attacker to obtain unauthorized access to user accounts due to improper restriction of excessive authentication attempts.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 00:00 UTC
CWE
- CWE-307 - Improper Restriction of Excessive Authentication Attempts
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7283558 | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | Langflow OSS |
Affected:
1.0.0 , ≤ 1.9.6
(semver)
cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:langflow_oss:1.9.6:*:*:*:*:*:*:* |
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CVE-2026-16347 (GCVE-0-2026-16347)
Vulnerability from cvelistv5 – Published: 2026-07-28 19:59 – Updated: 2026-07-29 13:57
VLAI
EPSS
VEX
Title
Improper restriction of excessive authentication attempts in MikroTik RouterOS and Cloud Hosted Router
Summary
MikroTik RouterOS contains a weakness in its API authentication handling that lacks effective safeguards against excessive login attempts. The system does not enforce meaningful rate-limiting, account lockout, or source-based restrictions, allowing repeated authentication failures to proceed without defensive response. In some versions, a fixed per-connection delay is present, but it can be bypassed through concurrent sessions, resulting in continued high-volume attempts. This deficiency increases the risk that an attacker could eventually obtain valid credentials and gain unauthorized access to administrative services.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 13:57 UTC
CWE
- CWE-307 - Improper restriction of excessive authentication attempts
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.cisa.gov/news-events/ics-advisories/i… | government-resource |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| MikroTik | RouterOS |
Affected:
All versions
|
|
| MikroTik | Cloud Hosted Router |
Affected:
All versions
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CVE-2026-15144 (GCVE-0-2026-15144)
Vulnerability from cvelistv5 – Published: 2026-07-29 16:10 – Updated: 2026-07-29 17:56
VLAI
EPSS
VEX
Title
@fastify/rate-limit vulnerable to rate-limit bypass via IPv6 address rotation
Summary
@fastify/rate-limit before 11.2.0 keys rate-limit buckets by the verbatim client IP string returned from request.ip. Because a single IPv6 client can control a large address range (a /64 holds 2^64 distinct addresses) and the same address has multiple valid textual representations, an IPv6 capable client can defeat the rate-limit boundary by rotating addresses or by rewriting the same address in different forms. Applications that use @fastify/rate-limit to protect endpoints such as authentication, password reset, OTP delivery, or expensive API calls can be bypassed by IPv6 clients behind a proxy that surfaces IPv6 to the origin when trustProxy is enabled. The issue is fixed in @fastify/rate-limit 11.2.0, where the default key generator normalizes IPv6 addresses to their canonical form, collapses IPv4 mapped IPv6 to IPv4, and applies a configurable prefix mask (default /64) via a new ipv6Subnet option.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 17:56 UTC
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| @fastify/rate-limit | @fastify/rate-limit |
Affected:
0 , < 11.2.0
(semver)
Unaffected: 11.2.0 (semver) |
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Mitigation
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.
Mitigation MIT-4
Architecture and Design
Strategy: Libraries or Frameworks
- 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.