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CWE-287 (认证机制不恰当) — Vulnerability Class 1451

1451 vulnerabilities classified as CWE-287 (认证机制不恰当). AI Chinese analysis included.

CWE-287 represents a critical authentication weakness where a system fails to adequately verify the identity of an actor claiming a specific identity. This flaw typically allows attackers to bypass security controls by exploiting insufficient verification mechanisms, enabling unauthorized access through stolen credentials, brute-force attacks, or session hijacking. When authentication logic is flawed, malicious entities can impersonate legitimate users, leading to severe data breaches and privilege escalation. Developers mitigate this risk by implementing robust, multi-factor authentication protocols and ensuring that identity verification processes are rigorous and resistant to common attack vectors. By strictly validating credentials against secure, hashed databases and employing adaptive security measures, organizations can significantly reduce the likelihood of unauthorized access, thereby protecting sensitive information and maintaining system integrity against sophisticated cyber threats.

MITRE CWE Description
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Common Consequences (1)
Integrity, Confidentiality, Availability, Access ControlRead Application Data, Gain Privileges or Assume Identity, Execute Unauthorized Code or Commands
This weakness can lead to the exposure of resources or functionality to unintended actors, possibly providing attackers with sensitive information or even execute arbitrary code.
Mitigations (1)
Architecture and DesignUse an authentication framework or library such as the OWASP ESAPI Authentication feature.
Examples (2)
The following code intends to ensure that the user is already logged in. If not, the code performs authentication with the user-provided username and password. If successful, it sets the loggedin and user cookies to "remember" that the user has already logged in. Finally, the code performs administrator tasks if the logged-in user has the "Administrator" username, as recorded in the user cookie.
my $q = new CGI; if ($q->cookie('loggedin') ne "true") { if (! AuthenticateUser($q->param('username'), $q->param('password'))) { ExitError("Error: you need to log in first"); } else { # Set loggedin and user cookies. $q->cookie( -name => 'loggedin', -value => 'true' ); $q->cookie( -name => 'user', -value => $q->param('username') ); } } if ($q->cookie('user') eq "Administrator") { DoAdministratorTasks(); }
Bad · Perl
GET /cgi-bin/vulnerable.cgi HTTP/1.1 Cookie: user=Administrator Cookie: loggedin=true [body of request]
Attack
In January 2009, an attacker was able to gain administrator access to a Twitter server because the server did not restrict the number of login attempts [REF-236]. The attacker targeted a member of Twitter's support team and was able to successfully guess the member's password using a brute force attack by guessing a large number of common words. After gaining access as the member of the support st…
CVE IDTitleCVSSSeverityPublished
CVE-2026-19924 Tenda AC10 httpd R7WebsSecurityHandler improper authentication — AC10 9.8 Critical2026-08-16
CVE-2026-73054 SiYuan before v3.7.4 Authentication Bypass via WebSocket — siyuan 7.5 High2026-08-15
CVE-2026-15341 User Session Synchronizer <= 1.4.0 - Unauthenticated Authentication Bypass to Account Takeover via 'ussync-key', 'ussync-token', and 'ussync-ref' Parameters — User Session Synchronizer 9.8 Critical2026-08-15
CVE-2026-15303 6Storage Rentals <= 2.27.0 - Unauthenticated Account Takeover via 'email' Parameter — 6Storage Rentals 9.8 Critical2026-08-15
CVE-2026-74240 Quay: jwt claim validation bypasses in quay federated robot and sso authentication — Red Hat OpenShift Update Service 5.4 Medium2026-08-14
CVE-2026-17182 IBM Db2 Mirror for i is affected by multiple vulnerabilities — Db2 Mirror for i 9.8 Critical2026-08-14
CVE-2026-17175 IBM Db2 Mirror for i is affected by multiple vulnerabilities — Db2 Mirror for i 7.5 High2026-08-14
CVE-2026-16905 IBM Db2 Mirror for i is affected by multiple vulnerabilities — Db2 Mirror for i 5.3 Medium2026-08-14
CVE-2026-73302 Budibase: OIDC SSO account takeover: incoming identity linked by email without checking email_verified — budibase 9.0 Critical2026-08-13
CVE-2026-73840 OpenChoreo: Unauthenticated build/workflow trigger via git-provider confusion (webhook signature bypass) — openchoreo 5.3 Medium2026-08-13
CVE-2026-17075 IBM i is Affected By Multiple Vulnerabilities in Digital Certificate Manager — i 6.5 Medium2026-08-13
CVE-2026-17101 IBM i is Affected By Multiple Vulnerabilities in Navigator for i — i 8.3 High2026-08-13
CVE-2026-17099 IBM i is Affected By Multiple Vulnerabilities in Navigator for i — i 7.3 High2026-08-13
CVE-2026-73655 Trigger.dev: Account Takeover via Cross-Provider OAuth Email Matching in Google Login — trigger.dev 7.4 High2026-08-13
CVE-2026-16867 IBM i is Affected By Multiple Vulnerabilities in NetServer — i 8.1 High2026-08-13
CVE-2026-17197 IBM i is Affected By Multiple Vulnerabilities in Host Servers — i 8.1 High2026-08-13
CVE-2026-59500 Priority - CWE-287: Improper Authentication — Portal Generator addon to Priority ERP (developed by Soft Solutions) 10.0 Critical2026-08-13
CVE-2026-47718 FUXA provides guest and invalid-token access to protected read APIs in secure mode — FUXA 5.5 Medium2026-08-12
CVE-2026-73501 kin-openapi: ValidationHandler.Load() Fail-Open Authentication Bypass via NoopAuthenticationFunc Default — kin-openapi 9.1 Critical2026-08-12
CVE-2024-27253 IBM Engineering Requirements Management DOORS Next is impacted by vulnerability in Reviews delete request — DOORS Next 10.0 Critical2026-08-12
CVE-2026-12359 Security vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify Access — Security Verify Access 8.1 High2026-08-12
CVE-2026-11923 Security vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify Access — Security Verify Access 7.4 High2026-08-12
CVE-2026-42018 Anonymous user token generation exposure in JFrog Artifactory — artifactory 7.5 High2026-08-12
CVE-2026-68760 Potential remember-me authentication bypass in JFrog Artifactory — artifactory 5.3 Medium2026-08-12
CVE-2026-50561 Yuxi has a JWT Authentication Bypass Leading to Cross-Instance Administrator Token Reuse — Yuxi 9.4 Critical2026-08-12
CVE-2026-26035 Fortinet FortiWeb 授权问题漏洞 — FortiWeb 8.8 Critical2026-08-12
CVE-2026-18961 Social Login, Passkeys, Magic Link & Email OTP – Passwordless Login by VentraConnect <= 1.4.3 - Unauthenticated Authentication Bypass via Spotify OAuth Callback — Social Login, Passkeys, Magic Link & Email OTP – Passwordless Login by VentraConnect 8.1 High2026-08-12
CVE-2026-73241 FreeRDP: RDSTLS server authentication bypass: a credential-less Capabilities PDU is accepted at the auth step (fail-open `resultCode`) — FreeRDP 8.3 High2026-08-11
CVE-2026-71467 Acm-search-v2-api-rhel9: search-v2-api: authentication bypass on /federated via upgrade: websocket header spoofing — Red Hat Advanced Cluster Management for Kubernetes 2 7.5 High2026-08-11
CVE-2026-62827 Microsoft SharePoint Server Elevation of Privilege Vulnerability — Microsoft SharePoint Enterprise Server 2016 8.8 High2026-08-11

Vulnerabilities classified as CWE-287 (认证机制不恰当) represent 1451 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.