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CWE-287 (认证机制不恰当) — Vulnerability Class 1744

1744 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 Control Read 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 Design Use 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 ID Title CVSS Severity Published
CVE-2026-107808 Nginx UI: Authentication bypass: password login does not enforce a passkey-only second factor (2FA bypass) — nginx-ui 8.1 High 2026-10-09
CVE-2026-108108 PHPNuxBill through 2025.3.20 CHAP Authentication Bypass via Password::chap_verify() — phpnuxbill 7.1 High 2026-10-09
CVE-2026-107910 Authentication bypass in FalkorDB Bolt endpoint via fail-open AUTH probe error handling — FalkorDB 8.1 High 2026-10-09
CVE-2026-105672 Unauthenticated JSON API Authorization Bypass Vulnerability in TP-Link Tapo C325WB — Tapo C325WB v2 8.7 High 2026-10-08
CVE-2026-16823 Security vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify Access — Security Verify Access 9.1 Critical 2026-10-08
CVE-2026-19491 Security vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify Access — Security Verify Access 9.1 Critical 2026-10-08
CVE-2026-19494 Security vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify Access — Security Verify Access 8.1 High 2026-10-08
CVE-2026-105832 EspoCRM before 10.0.6 Two-Factor Authentication Bypass on Unauthenticated Routes — espocrm 4.3 Medium 2026-10-08
CVE-2026-14502 IBM DataPower Gateway Improper Authentication — DataPower Gateway 10.6CD 9.8 Critical 2026-10-08
CVE-2026-107228 AsyncHttpClient CookieStore Silently Overrides Caller's Explicit Cookie Header via setHeader (Bypass of CVE-2024-53990 Fix) — async-http-client 6.8 Medium 2026-10-07
CVE-2026-46437 wger: API credentials remain valid after logout/password change — wger 4.8 Medium 2026-10-07
CVE-2026-107180 MISP: Forced TOTP Enrolment Bypassed via Non-Browser Request Types on otp_required Instances — MISP 7.1 High 2026-10-07
CVE-2026-107162 Express Gateway through 1.16.11 OAuth 2.0 Refresh Token Validation Bypass — express-gateway 6.8 Medium 2026-10-07
CVE-2026-83540 wolfSSHd on Windows race condition leading to logon token reused across connections — wolfSSH 7.7 High 2026-10-07
CVE-2026-106488 Backstage: Improper authentication in the OIDC provider — backstage 8.1 High 2026-10-06
CVE-2026-106460 Backstage: Explicit negative email verification can be ignored during shared OAuth profile normalization — backstage 6.8 Medium 2026-10-06
CVE-2026-106457 Backstage: Insufficient audience validation in the Cloudflare Access auth provider — backstage 6.8 Medium 2026-10-06
CVE-2026-73278 Gitea WebAuthn bypass during OAuth and OIDC sign-in — Gitea - - 2026-10-06
CVE-2026-105305 Keycloak-services: keycloak-services: device authorization grant bypasses per-client minimum.acr.value enforcement — Red Hat Build of Keycloak 5.4 Medium 2026-10-06
CVE-2026-59358 UAA OAuth Token Endpoint Vulnerability allows user access token reuse for client_credentials grant type — UAA 7.6 High 2026-10-06
CVE-2026-105704 SourceCodester Drug Recommendation System Auth Guard improper authentication — Drug Recommendation System 7.3 High 2026-10-06
CVE-2026-105640 Plane: Account Takeover via Unverified OAuth Email Match (Gitea, self-managed GitLab) — plane 9.1 Critical 2026-10-05
CVE-2026-105213 ZITADEL before 4.17.1 Authentication Bypass via Login V2 for Deactivated Organizations — zitadel 8.2 High 2026-10-04
CVE-2026-105212 ZITADEL before 3.4.14 and 4.16.2 Account Takeover via Passkey Enrollment — zitadel 7.5 High 2026-10-04
CVE-2026-105210 ZITADEL before 4.17.1 Unauthenticated MFA Enrollment via Login V1 Init Handlers — zitadel 8.2 High 2026-10-04
CVE-2026-105133 Ahsay AhsayCBS API ApiStructsAction.java checkSysPwd improper authentication — AhsayCBS 7.3 High 2026-10-04
CVE-2026-97343 Burst Statistics <= 3.7.1 - Improper Authentication to Account Persistence via Share-Link Authentication Bypass via 'burst_share_token' — Burst Statistics – Simple WordPress Analytics (Google Analytics Alternative) 4.3 Medium 2026-10-03
CVE-2026-104638 onetwothreeneth HospitalManagementSystem sessions.php improper authentication — HospitalManagementSystem 5.3 Medium 2026-10-02
CVE-2026-97637 JSON API Auth <= 3.1.2 - Unauthenticated Authentication Bypass via Cached 'generate_auth_cookie' Response — JSON API Auth 9.8 Critical 2026-10-02
CVE-2026-19660 Divi Membership <= 2.3.0 - Unauthenticated Authentication Bypass via 'paypal_param' Parameter — Divi Membership 9.8 Critical 2026-10-02

Vulnerabilities classified as CWE-287 (认证机制不恰当) represent 1744 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.