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Weakness (CWE)

CWE-303: Incorrect Implementation of Authentication Algorithm

Base Draft

The requirements for the product dictate the use of an established authentication algorithm, but the implementation of the algorithm is incorrect.

Source: MITRE CWE-303

29 results · Clear filters · Feed

  • Critical 9.1

    Apache Impala: Impala Executor Webserver Auth Bypass

    Incorrect implementation of JWT/OAuth authentication in Impala executors in Apache Impala versions up to and including 4.5.2 which allows attacked to access resources served by the executor's webserver when that webserver is configured to accept JWT/OAuth tok…

  • Critical 10.0

    [mcp-atlassian] Authentication bypass in HTTP transport: AtlassianOpaqueTokenVerifier accepts any non-empty token

    MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, the HTTP transport accepts requests without a verified user identity and downstream fetcher construction falls back to the operator's globall…

  • Critical 9.2

    Password Authentication Bypass Vulnerability in GX Works3 and Motion Control Setting

    Incorrect Implementation of Authentication Algorithm Vulnerability in Mitsubishi Electric GX Works3 and Motion Control Setting allows a local attacker to successfully authenticate even with an invalid block password by executing the affected product and modif…

  • Critical 9.2

    CWE-303 : Incorrect Implementation of Authentication Algorithm vulnerability exists that could cause loss of confidenti…

  • Critical 9.8

    vCenter authentication-bypass vulnerability

    VMware vCenter contains an authentication bypass vulnerability in the VMware Directory Service. A malicious actor with network access to vCenter may exploit this issue to bypass authentication and gain unauthorized access to the system.

  • Critical 9.1

    Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator

    The JwtAccessTokenValidator class in Apache CXF fails to validate the 'aud' (Audience) claims of incoming JWT access tokens. This allows a JWT issued for one Resource Server to be successfully replayed against a completely different Resource Server, leading t…

  • Critical 10.0

    UDS Identity Config has a client authentication bypass in `ClientIdAndKubernetesSecretAuthenticator`

    UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS Core's Identity deployment. In versions 0.11.0 through 0.26.0, a logic error in the `client-kubernetes-secret` Keycloak client authenticator …

  • Critical 10.0
    CVE-2026-46595 Public exploit

    Invoking VerifiedPublicKeyCallback permissions skip enforcement in golang.org/x/crypto/ssh

    Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of callback is passed other than public key, then the source-address validation would be skipped.

  • Critical 9.1

    Microsoft SSO Plugin for Jira & Confluence Elevation of Privilege Vulnerability

    Incorrect implementation of authentication algorithm in Microsoft SSO Plugin for Jira & Confluence allows an unauthorized attacker to elevate privileges over a network.

  • Critical 9.1

    Apache Kafka: Missing JWT token validation in OAUTHBEARER authentication

    A possible security vulnerability has been identified in Apache Kafka. By default, the broker property `sasl.oauthbearer.jwt.validator.class` is set to `org.apache.kafka.common.security.oauthbearer.DefaultJwtValidator`. It accepts any JWT token without valida…

  • Critical 9.3

    MiCode FileExplorer SwiFTP Server Authentication Bypass

    MiCode FileExplorer contains an authentication bypass vulnerability in the embedded SwiFTP FTP server component that allows network attackers to log in without valid credentials. Attackers can send arbitrary username and password combinations to the PASS comm…

  • Critical 9.4

    OpenClaw < 2026.2.1 - Inbound Allowlist Policy Bypass in voice-call Extension via Empty Caller ID and Suffix Matching

    OpenClaw versions prior to 2026.2.1 with the voice-call extension installed and enabled contain an authentication bypass vulnerability in inbound allowlist policy validation that accepts empty caller IDs and uses suffix-based matching instead of strict equali…

  • Critical 9.9

    Cal.com Authentication Bypass via bad TOTP + password checks

    Cal.com is open-source scheduling software. Prior to 5.9.8, A flaw in the login credentials provider allows an attacker to bypass password verification when a TOTP code is provided, potentially gaining unauthorized access to user accounts. This issue exists d…

  • Critical 10.0
    CVE-2025-13390 Public exploit Scanner template

    WP Directory Kit <= 1.4.4 - Authentication Bypass to Privilege Escalation via Account Takeover

    The WP Directory Kit plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including, 1.4.4 due to incorrect implementation of the authentication algorithm in the "wdk_generate_auto_login_link" function. This is due to the fea…

  • Critical 9.9

    Account Takeover via Code Exchange Endpoint

    Mattermost versions 11.0.x <= 11.0.2, 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12 fail to to verify that the token used during the code exchange originates from the same authentication flow, which allows an authenticated user to perform account …

  • Critical 9.9

    Account takeover on OAuth/OpenID-enabled servers

    Mattermost versions 10.12.x <= 10.12.1, 10.11.x <= 10.11.4, 10.5.x <= 10.5.12, 11.0.x <= 11.0.3 fail to properly validate OAuth state tokens during OpenID Connect authentication which allows an authenticated attacker with team creation privileges to take over…

  • Critical 9.8

    The Newtec Celox UHD (models: CELOXA504, CELOXA820) running firmware version celox-21.6.13 is vulnerable to an authenti…

  • Critical 9.8

    Windows NTLM V1 Elevation of Privilege Vulnerability

    Windows NTLM V1 Elevation of Privilege Vulnerability

  • Critical 9.2

    Support for authentication bypass condition in M-Files LDAP authentication

    Authentication bypass condition in LDAP authentication in M-Files server versions before 24.11 supported usage of OpenLDAP configurations that allowed user authentication without a password when the LDAP server itself had the vulnerable configuration.

  • Critical 9.8
    CVE-2024-7593 Exploited Public exploit Scanner template EPSS 100%

    Incorrect implementation of an authentication algorithm in Ivanti vTM other than versions 22.2R1 or 22.7R2 allows a rem…

    KEV Sep 24, 2024
  • Critical 9.6

    Inappropriate implementation in Skia in Google Chrome prior to 115.0.5790.98 allowed a remote attacker who had compromi…

  • Critical 9.3

    Improper Authentication in Tripwire Enterprise 9.1.0 APIs

    An authentication bypass vulnerability has been identified in the REST and SOAP API components of Tripwire Enterprise (TE) 9.1.0 when TE is configured to use LDAP/Active Directory SAML authentication and its optional "Auto-synchronize LDAP Users, Roles, and G…

  • Critical 10.0

    An authentication bypass vulnerability was present in the GitHub Enterprise Server (GHES) when utilizing SAML single si…

  • Critical 9.8
    CVE-2023-29357 Exploited · Ransomware Public exploit Scanner template EPSS 100%

    Microsoft SharePoint Server Elevation of Privilege Vulnerability

    Microsoft SharePoint Server Elevation of Privilege Vulnerability

    KEV Jan 10, 2024
  • Critical 9.1

    A vulnerability has been identified in Mendix SAML (Mendix 7 compatible) (All versions >= V1.17.3 < V1.18.0), Mendix SA…

  • Critical 9.1

    A vulnerability has been identified in Mendix SAML (Mendix 7 compatible) (All versions >= V1.16.4 < V1.17.3), Mendix SA…

  • Critical 9.9

    DataHub missing JWT signature check

    DataHub is an open-source metadata platform. Prior to version 0.8.45, the `StatelessTokenService` of the DataHub metadata service (GMS) does not verify the signature of JWT tokens. This allows an attacker to connect to DataHub instances as any user if Metadat…

  • Critical 10.0
    CVE-2022-20695 EPSS 20%

    Cisco Wireless LAN Controller Management Interface Authentication Bypass Vulnerability

    A vulnerability in the authentication functionality of Cisco Wireless LAN Controller (WLC) Software could allow an unauthenticated, remote attacker to bypass authentication controls and log in to the device through the management interface This vulnerability …

  • Critical 9.8

    salt-api unauthenticated remote code execution

    CWE - CWE-287: Improper Authentication vulnerability in SUSE Linux Enterprise Server 15 SP 3; openSUSE Tumbleweed allows local attackers to execute arbitrary code via salt without the need to specify valid credentials. This issue affects: SUSE Linux Enterpris…