Common Weakness Enumeration
CWE-287
DiscouragedImproper Authentication
Abstraction: Class · Status: Draft
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
5966 vulnerabilities reference this CWE, most recent first.
CVE-2026-4021 (GCVE-0-2026-4021)
Vulnerability from cvelistv5 – Published: 2026-03-23 23:25 – Updated: 2026-04-08 17:32
VLAI
EPSS
VEX
Title
Contest Gallery <= 28.1.5 - Unauthenticated Privilege Escalation Admin Account Takeover via Registration Confirmation Email-to-ID Type Confusion
Summary
The Contest Gallery plugin for WordPress is vulnerable to an authentication bypass leading to admin account takeover in all versions up to, and including, 28.1.5. This is due to the email confirmation handler in `users-registry-check-after-email-or-pin-confirmation.php` using the user's email string in a `WHERE ID = %s` clause instead of the numeric user ID, combined with an unauthenticated key-based login endpoint in `ajax-functions-frontend.php`. When the non-default `RegMailOptional=1` setting is enabled, an attacker can register with a crafted email starting with the target user ID (e.g., `1poc@example.test`), trigger the confirmation flow to overwrite the admin's `user_activation_key` via MySQL integer coercion, and then use the `post_cg1l_login_user_by_key` AJAX action to authenticate as the admin without any credentials. This makes it possible for unauthenticated attackers to take over any WordPress administrator account and gain full site control.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - Improper Authentication
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| contest-gallery | Contest Gallery – Upload & Vote Photos, Media, Sell with PayPal & Stripe |
Affected:
0 , ≤ 28.1.5
(semver)
|
Credits
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CVE-2026-3794 (GCVE-0-2026-3794)
Vulnerability from cvelistv5 – Published: 2026-03-09 01:32 – Updated: 2026-03-25 12:33
VLAI
EPSS
VEX
Title
doramart DoraCMS Email API send improper authentication
Summary
A vulnerability was identified in doramart DoraCMS 3.0.x. This issue affects some unknown processing of the file /api/v1/mail/send of the component Email API. Such manipulation leads to improper authentication. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - Improper Authentication
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.349761 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.349761 | signaturepermissions-required |
| https://vuldb.com/?submit.768239 | third-party-advisory |
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CVE-2026-3739 (GCVE-0-2026-3739)
Vulnerability from cvelistv5 – Published: 2026-03-08 14:02 – Updated: 2026-03-12 15:00 X_Open Source
VLAI
EPSS
VEX
Title
suitenumerique messages ThreadAccess serializers.py ThreadAccessSerializer improper authentication
Summary
A security flaw has been discovered in suitenumerique messages 0.2.0. This issue affects the function ThreadAccessSerializer of the file src/backend/core/api/serializers.py of the component ThreadAccess. The manipulation results in improper authentication. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 0.3.0 is capable of addressing this issue. The patch is identified as d7729f4b885449f6dee3faf8b5f2a05769fb3d6e. The affected component should be upgraded.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - Improper Authentication
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.349717 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.349717 | signaturepermissions-required |
| https://vuldb.com/?submit.767329 | third-party-advisory |
| https://github.com/suitenumerique/messages/securi… | exploit |
| https://github.com/suitenumerique/messages/pull/557 | issue-trackingpatch |
| https://github.com/suitenumerique/messages/commit… | patch |
| https://github.com/suitenumerique/messages/releas… | patch |
| https://github.com/suitenumerique/messages/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| suitenumerique | messages |
Affected:
0.2.0
Unaffected: 0.3.0 |
Credits
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CVE-2026-3655 (GCVE-0-2026-3655)
Vulnerability from cvelistv5 – Published: 2026-05-29 06:43 – Updated: 2026-05-29 10:05
VLAI
EPSS
VEX
Title
OTP Login With Phone Number, OTP Verification <= 1.8.60 - Unauthenticated Authentication Bypass via Firebase OTP Verification
Summary
The OTP Login With Phone Number, OTP Verification plugin for WordPress is vulnerable to authentication bypass in versions 1.8.50 through 1.8.60. This is due to the Firebase verification flow in the `lwp_ajax_register` AJAX handler not binding the Firebase session to the phone number supplied in the request. The `idehweb_lwp_activate_through_firebase()` function validates that a Firebase OTP session is legitimate, but the `phoneNumber` returned by Firebase is never compared against the victim's stored phone number. This makes it possible for unauthenticated attackers to authenticate as any user who has a phone number stored in user meta, including administrators, by verifying their own Firebase session and supplying the victim's phone number in the same request.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - Improper Authentication
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| glboy | OTP Login With Phone Number, OTP Verification |
Affected:
1.8.50 , ≤ 1.8.60
(semver)
|
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CVE-2026-3224 (GCVE-0-2026-3224)
Vulnerability from cvelistv5 – Published: 2026-03-03 21:21 – Updated: 2026-03-04 14:43
VLAI
EPSS
VEX
Summary
Authentication bypass in the Microsoft Entra ID (Azure AD) authentication mode in Devolutions Server 2025.3.15.0 and earlier allows an unauthenticated user to authenticate as an arbitrary Entra ID user via a forged JSON Web Token (JWT).
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - Improper Authentication, CWE-347: Improper Verification of Cryptographic Signature
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Devolutions | Server |
Affected:
0 , ≤ 2025.3.15.0
(custom)
|
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CVE-2026-3194 (GCVE-0-2026-3194)
Vulnerability from cvelistv5 – Published: 2026-02-25 17:02 – Updated: 2026-02-25 18:43
VLAI
EPSS
VEX
Title
Chia Blockchain RPC Server Master Passphrase get_private_key missing authentication
Summary
A flaw has been found in Chia Blockchain 2.1.0. The affected element is the function send_transaction/get_private_key of the component RPC Server Master Passphrase Handler. This manipulation causes missing authentication. The attack can only be executed locally. The attack's complexity is rated as high. The exploitability is described as difficult. The exploit has been published and may be used. The vendor was informed early via email. A separate report via bugbounty was rejected with the reason "This is by design. The user is responsible for host security".
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.347750 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.347750 | signaturepermissions-required |
| https://vuldb.com/?submit.757201 | third-party-advisory |
| https://github.com/Danimlzg/chia-rpc-auth-bypass.git | broken-linkexploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Chia | Blockchain |
Affected:
2.1.0
|
Credits
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CVE-2026-3192 (GCVE-0-2026-3192)
Vulnerability from cvelistv5 – Published: 2026-02-25 16:02 – Updated: 2026-02-25 20:19
VLAI
EPSS
VEX
Title
Chia Blockchain RPC Credential rpc_server_base.py _authenticate improper authentication
Summary
A security vulnerability has been detected in Chia Blockchain 2.1.0. This issue affects the function _authenticate of the file rpc_server_base.py of the component RPC Credential Handler. The manipulation leads to improper authentication. The attack is possible to be carried out remotely. The attack is considered to have high complexity. The exploitability is assessed as difficult. The exploit has been disclosed publicly and may be used. The vendor was informed early via email. A separate report via bugbounty was rejected with the reason "This is by design. The user is responsible for host security".
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - Improper Authentication
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.347748 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.347748 | signaturepermissions-required |
| https://github.com/Danimlzg/chia-rpc-auth-bypass.git | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Chia | Blockchain |
Affected:
2.1.0
|
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CVE-2026-3053 (GCVE-0-2026-3053)
Vulnerability from cvelistv5 – Published: 2026-02-24 01:32 – Updated: 2026-02-28 02:02
VLAI
EPSS
VEX
Title
DataLinkDC dinky OpenAPI Endpoint AppConfig.java addInterceptors missing authentication
Summary
A vulnerability was determined in DataLinkDC dinky up to 1.2.5. This affects the function addInterceptors of the file dinky-admin/src/main/java/org/dinky/configure/AppConfig.java of the component OpenAPI Endpoint. Executing a manipulation can lead to missing authentication. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/?id.347411 | vdb-entrytechnical-description |
| https://vuldb.com/?ctiid.347411 | signaturepermissions-required |
| https://vuldb.com/?submit.757589 | third-party-advisory |
| https://github.com/AnalogyC0de/public_exp/issues/6 | issue-tracking |
| https://github.com/AnalogyC0de/public_exp/issues/… | exploitissue-tracking |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| DataLinkDC | dinky |
Affected:
1.2.0
Affected: 1.2.1 Affected: 1.2.2 Affected: 1.2.3 Affected: 1.2.4 Affected: 1.2.5 |
Credits
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CVE-2026-2991 (GCVE-0-2026-2991)
Vulnerability from cvelistv5 – Published: 2026-03-18 15:28 – Updated: 2026-04-08 17:06
VLAI
EPSS
VEX
Title
KiviCare – Clinic & Patient Management System (EHR) <= 4.1.2 - Unauthenticated Authentication Bypass via Social Login Token
Summary
The KiviCare – Clinic & Patient Management System (EHR) plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 4.1.2. This is due to the `patientSocialLogin()` function not verifying the social provider access token before authenticating a user. This makes it possible for unauthenticated attackers to log in as any patient registered on the system by providing only their email address and an arbitrary value for the access token, bypassing all credential verification. The attacker gains access to sensitive medical records, appointments, prescriptions, and billing information (PII/PHI breach). Additionally, authentication cookies are set before the role check, meaning the auth cookies for non-patient users (including administrators) are also set in the HTTP response headers, even though a 403 response is returned.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - Improper Authentication
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| iqonicdesign | KiviCare – Clinic & Patient Management System (EHR) |
Affected:
0 , ≤ 4.1.2
(semver)
|
Credits
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CVE-2026-2812 (GCVE-0-2026-2812)
Vulnerability from cvelistv5 – Published: 2026-05-20 17:47 – Updated: 2026-05-20 19:30
VLAI
EPSS
VEX
Title
Improper Authentication issue in ArcGIS Server
Summary
ArcGIS Server contains an improper authentication vulnerability in an undocumented administrative endpoint. An unauthenticated attacker could exploit this issue by sending a crafted request to the endpoint. Successful exploitation may result in disruption of the web-based browsing interface. This issue affects ArcGIS Server 12.0 and earlier.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-287 - Improper Authentication
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Esri | ArcGIS Server |
Affected:
11.1 , ≤ 12.0
(custom)
|
Date Public
2026-05-06 17:47
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Mitigation
Architecture and Design
Strategy: Libraries or Frameworks
Use an authentication framework or library such as the OWASP ESAPI Authentication feature.
CAPEC-114: Authentication Abuse
An attacker obtains unauthorized access to an application, service or device either through knowledge of the inherent weaknesses of an authentication mechanism, or by exploiting a flaw in the authentication scheme's implementation. In such an attack an authentication mechanism is functioning but a carefully controlled sequence of events causes the mechanism to grant access to the attacker.
CAPEC-115: Authentication Bypass
An attacker gains access to application, service, or device with the privileges of an authorized or privileged user by evading or circumventing an authentication mechanism. The attacker is therefore able to access protected data without authentication ever having taken place.
CAPEC-151: Identity Spoofing
Identity Spoofing refers to the action of assuming (i.e., taking on) the identity of some other entity (human or non-human) and then using that identity to accomplish a goal. An adversary may craft messages that appear to come from a different principle or use stolen / spoofed authentication credentials.
CAPEC-194: Fake the Source of Data
An adversary takes advantage of improper authentication to provide data or services under a falsified identity. The purpose of using the falsified identity may be to prevent traceability of the provided data or to assume the rights granted to another individual. One of the simplest forms of this attack would be the creation of an email message with a modified "From" field in order to appear that the message was sent from someone other than the actual sender. The root of the attack (in this case the email system) fails to properly authenticate the source and this results in the reader incorrectly performing the instructed action. Results of the attack vary depending on the details of the attack, but common results include privilege escalation, obfuscation of other attacks, and data corruption/manipulation.
CAPEC-22: Exploiting Trust in Client
An attack of this type exploits vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by communicating directly with the server where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
CAPEC-57: Utilizing REST's Trust in the System Resource to Obtain Sensitive Data
This attack utilizes a REST(REpresentational State Transfer)-style applications' trust in the system resources and environment to obtain sensitive data once SSL is terminated.
CAPEC-593: Session Hijacking
This type of attack involves an adversary that exploits weaknesses in an application's use of sessions in performing authentication. The adversary is able to steal or manipulate an active session and use it to gain unathorized access to the application.
CAPEC-633: Token Impersonation
An adversary exploits a weakness in authentication to create an access token (or equivalent) that impersonates a different entity, and then associates a process/thread to that that impersonated token. This action causes a downstream user to make a decision or take action that is based on the assumed identity, and not the response that blocks the adversary.
CAPEC-650: Upload a Web Shell to a Web Server
By exploiting insufficient permissions, it is possible to upload a web shell to a web server in such a way that it can be executed remotely. This shell can have various capabilities, thereby acting as a "gateway" to the underlying web server. The shell might execute at the higher permission level of the web server, providing the ability the execute malicious code at elevated levels.
CAPEC-94: Adversary in the Middle (AiTM)
An adversary targets the communication between two components (typically client and server), in order to alter or obtain data from transactions. A general approach entails the adversary placing themself within the communication channel between the two components.