Common Weakness Enumeration

CWE-287

Discouraged

Improper Authentication

Abstraction: Class · Status: Draft

API response cwe.mitre.org

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

7023 vulnerabilities reference this CWE, most recent first.

CVE-2026-111911 (GCVE-0-2026-111911)

Vulnerability from cvelistv5 – Published: 2026-10-17 18:46 – Updated: 2026-10-19 14:54
VLAI
Title
phpMyFAQ 4.0.0 before 4.1.9 Authentication Bypass via WebAuthn Credential Injection
Summary
phpMyFAQ 4.0.0 before 4.1.9 contains an authentication bypass vulnerability where WebAuthn registration endpoints attach credentials to any account without authentication or challenge validation. Attackers can stage a victim username, submit a forged fmt=none attestation to register a passkey, then log in bypassing passwords and TOTP for account takeover.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 14:53 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6518 records in the last 180 days details
References
Impacted products
Vendor Product Version
thorsten phpMyFAQ Affected: 4.0.0 , < 4.1.9 (semver)
Unaffected: 4.1.9 (semver)
    cpe:2.3:a:phpmyfaq:phpmyfaq:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-03 00:00
Credits
HieuDC-SAS-NightWolf
Show details on NVD website
To clipboard 

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CVE-2026-111898 (GCVE-0-2026-111898)

Vulnerability from cvelistv5 – Published: 2026-10-17 18:46 – Updated: 2026-10-18 11:21
VLAI
Title
phpMyFAQ 4.2.0-alpha before 4.2.0-beta Account Takeover via Keycloak Implicit Account Linking
Summary
phpMyFAQ 4.2.0-alpha before 4.2.0-beta contains an authentication bypass vulnerability that allows Keycloak users to take over local accounts by matching preferred_username or email. Attackers controlling a Keycloak identity with a colliding username or unverified email can log in through /auth/keycloak/authorize to bind their subject and gain superadmin privileges.
Severity
7.7 (High)
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-18 11:21 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6518 records in the last 180 days details
References
Impacted products
Vendor Product Version
thorsten phpMyFAQ Affected: 4.2.0-alpha , < 4.2.0-beta (semver)
Unaffected: 4.2.0-beta (semver)
    cpe:2.3:a:phpmyfaq:phpmyfaq:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-03 00:00
Credits
bp0lr
Show details on NVD website
To clipboard 

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CVE-2026-111895 (GCVE-0-2026-111895)

Vulnerability from cvelistv5 – Published: 2026-10-17 18:46 – Updated: 2026-10-19 14:46
VLAI
Title
phpMyFAQ 3.2.0 before 4.0.0 and 4.0.2 before 4.2.0-beta Account Takeover via Entra ID preferred_username
Summary
phpMyFAQ 3.2.0 before 4.0.0 and 4.0.2 before 4.2.0-beta contains an authentication bypass in its Microsoft Entra ID login flow, which links users by the mutable preferred_username claim and whose AuthEntraId::create() ignores the duplicate-login exception while continuing with the existing local account. Attackers controlling an Entra identity in the configured tenant with a matching preferred_username can take over that local account, including super-admin accounts.
Severity
7.6 (High)
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 14:44 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6518 records in the last 180 days details
References
Impacted products
Vendor Product Version
thorsten phpMyFAQ Affected: 3.2.0 , < 4.0.0 (semver)
Unaffected: 4.0.0 (semver)
Create a notification for this product.
thorsten phpMyFAQ Affected: 4.0.2 , < 4.2.0-beta (semver)
Unaffected: 4.2.0-beta (semver)
Create a notification for this product.
Date Public
2026-10-03 00:00
Credits
nirtem
Show details on NVD website
To clipboard 

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CVE-2026-111882 (GCVE-0-2026-111882)

Vulnerability from cvelistv5 – Published: 2026-10-17 18:46 – Updated: 2026-10-18 12:23
VLAI
Title
phpMyFAQ 3.2.0-alpha before 4.1.9 and 4.2.0-alpha before 4.2.0-beta TOTP 2FA Bypass via SSO Callbacks
Summary
phpMyFAQ 3.2.0-alpha before 4.1.9 and 4.2.0-alpha before 4.2.0-beta contains an authentication bypass vulnerability that allows IdP-authenticated users to skip TOTP two-factor authentication through the Keycloak and Entra ID SSO callbacks. Attackers holding a valid or phished IdP identity linked to a 2FA-enabled account can complete the OIDC flow and obtain a fully authenticated session, including administrator accounts.
Severity
8.6 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-18 12:17 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6518 records in the last 180 days details
References
Impacted products
Vendor Product Version
thorsten phpMyFAQ Affected: 3.2.0-alpha , < 4.1.9 (semver)
Unaffected: 4.1.9 (semver)
Create a notification for this product.
thorsten phpMyFAQ Affected: 4.2.0-alpha , < 4.2.0-beta (semver)
Unaffected: 4.2.0-beta (semver)
Create a notification for this product.
Date Public
2026-10-03 00:00
Credits
manus-use
Show details on NVD website
To clipboard 

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CVE-2026-111870 (GCVE-0-2026-111870)

Vulnerability from cvelistv5 – Published: 2026-10-18 03:30 – Updated: 2026-10-19 15:24
VLAI
Title
itsmeravitejak Online-Examination-System admin.php isAdmin missing authentication
Summary
A security flaw has been discovered in itsmeravitejak Online-Examination-System up to e6208e630b14657999bbfe4c9912302d2a1e2449. The affected element is the function isAdmin of the file admin/admin.php. Performing a manipulation results in missing authentication. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:C
5.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:C
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 15:23 UTC
CWE
Assigner
VulDB CNA under the mitre root
CNA scorecard B 82/100 over 3917 records in the last 180 days details
References
Impacted products
Vendor Product Version
itsmeravitejak Online-Examination-System Affected: e6208e630b14657999bbfe4c9912302d2a1e2449
    cpe:2.3:a:itsmeravitejak:online-examination-system:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Hei Lai Sze PrivacyFirst (VulDB User) PrivacyFirst (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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CVE-2026-111639 (GCVE-0-2026-111639)

Vulnerability from cvelistv5 – Published: 2026-10-16 17:39 – Updated: 2026-10-16 17:39
VLAI
Title
bbs-go through 4.4.6 Account Takeover via Google One Tap Login
Summary
bbs-go through 4.4.6 contains an authentication bypass vulnerability in the /api/login/google_one_tap endpoint that allows remote attackers to log in as other users by submitting Google ID tokens issued to any OAuth client. Attackers operating their own Google OAuth client can capture a victim's Google-signed ID token and replay it, since the aud claim is never checked, to obtain an authenticated session as the victim's Google-linked account.
Severity
8.6 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CWE
  • CWE-287 - Improper Authentication
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6518 records in the last 180 days details
References
Impacted products
Vendor Product Version
mlogclub bbs-go Affected: 0 , ≤ 4.4.6 (custom)
    cpe:2.3:a:bbs-go_project:bbs-go:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-15 00:00
Credits
hieuPenguinnn
Show details on NVD website
To clipboard 

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CVE-2026-111090 (GCVE-0-2026-111090)

Vulnerability from cvelistv5 – Published: 2026-10-20 07:42 – Updated: 2026-10-20 07:42
VLAI
Title
Improper Signature Verification of Firmware Update Files
Summary
A logic error exists in the signature verification routine resulting in acceptance of unauthenticated update and license files.It is necessary to use only the MyStormshield servers to retrieve update files or licenses, or to use automatic verification via SNS.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-287 - Improper Authentication
Assigner
airbus CNA under the mitre root
CNA scorecard C 71/100 over 11 records in the last 180 days details
References
Impacted products
Vendor Product Version
Stormshield Stormshield Network Security Affected: 4.3.0 , ≤ 4.3.44 (semver)
Affected: 4.8.0 , ≤ 4.8.19 (semver)
Affected: 5.0.0 , ≤ 5.0.9 (semver)
Affected: 5.1.0 , ≤ 5.1.3 (semver)
Unaffected: 4.8.20 LTSB (semver)
Unaffected: 5.0.10 (semver)
Unaffected: 5.1.4 EA (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-110864 (GCVE-0-2026-110864)

Vulnerability from cvelistv5 – Published: 2026-10-14 22:52 – Updated: 2026-10-15 15:36
VLAI
Title
Better Auth 1.5.0-beta.12 before 1.7.7 Authentication Bypass via OAuth Proxy
Summary
Better Auth from 1.5.0-beta.12 before 1.7.7 contains an authentication bypass vulnerability in the OAuth Proxy plugin that allows unauthenticated attackers to sign in as other users by forging encrypted profiles. When the proxy shares the global secret and cookie-stored state is used, attackers can obtain encrypted state for a fake profile with a victim's verified email to take over the account via implicit linking.
Severity
9.1 (Critical)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 15:35 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6518 records in the last 180 days details
References
Impacted products
Vendor Product Version
better-auth better-auth Affected: 1.5.0-beta.12 , < 1.7.7 (semver)
Unaffected: 1.7.7 (semver)
    cpe:2.3:a:better-auth:better_auth:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-30 00:00
Credits
iabdullah215 martinfrancois
Show details on NVD website
To clipboard 

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CVE-2026-110863 (GCVE-0-2026-110863)

Vulnerability from cvelistv5 – Published: 2026-10-14 22:52 – Updated: 2026-10-16 17:14
VLAI
Title
Better Auth @better-auth/sso before 1.7.3 Authentication Bypass via Personal SSO Providers
Summary
Better Auth @better-auth/sso from 1.7.0-rc.2 before 1.7.3 contains an authentication bypass vulnerability that allows authenticated users to sign in as other users by registering a personal SSO provider. Attackers can copy a legitimate provider's OIDC issuer or SAML entity ID and assert a victim's subject or NameID, because account lookup ignores providerId, creating sessions for victim accounts.
Severity
8.6 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 16:35 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6518 records in the last 180 days details
References
Impacted products
Vendor Product Version
better-auth sso Affected: 1.7.0-rc.2 , < 1.7.3 (semver)
    cpe:2.3:a:better-auth:better-auth\/sso:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-29 00:00
Credits
manus-use
Show details on NVD website
To clipboard 

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CVE-2026-110862 (GCVE-0-2026-110862)

Vulnerability from cvelistv5 – Published: 2026-10-14 22:52 – Updated: 2026-10-15 13:34
VLAI
Title
Better Auth 1.4.0-beta.18 before 1.7.7 Authentication Bypass via Magic Link
Summary
Better Auth from 1.4.0-beta.18 before 1.7.7 contains an authentication bypass vulnerability that allows unauthenticated attackers to sign in as other users by reusing OAuth state values as Magic Link tokens. Attackers can start an OAuth sign-in with a victim's email and submit the returned state to Magic Link verification, gaining sessions or creating falsely email-verified accounts.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 13:33 UTC
CWE
  • CWE-287 - Improper Authentication
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6518 records in the last 180 days details
References
Impacted products
Vendor Product Version
better-auth better-auth Affected: 1.4.0-beta.18 , < 1.7.7 (semver)
Unaffected: 1.7.7 (semver)
    cpe:2.3:a:better-auth:better_auth:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-30 00:00
Credits
rick-v12 bazumo
Show details on NVD website
To clipboard 

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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.

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