VYPR

CWE-303

Incorrect Implementation of Authentication Algorithm

BaseDraft

Description

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

This incorrect implementation may allow authentication to be bypassed.

Hierarchy (View 1000)

Parents

Children

Related attack patterns (CAPEC)

CAPEC-90

CVEs mapped to this weakness (101)

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  • CVE-2026-8922MedMay 19, 2026
    risk 0.28cvss 5.4epss 0.00

    A flaw was found in Keycloak. When both realm-level and client-level `notBefore` revocation policies are configured, Keycloak's OpenID Connect (OIDC) Introspection feature fails to properly honor the realm-level policy. This allows tokens that should have been revoked to remain…

  • CVE-2026-0999MedFeb 16, 2026
    risk 0.28cvss 5.4epss 0.00

    Mattermost versions 11.1.x <= 11.1.2, 10.11.x <= 10.11.9, 11.2.x <= 11.2.1 fail to properly validate login method restrictions which allows an authenticated user to bypass SSO-only login requirements via userID-based authentication. Mattermost Advisory ID: MMSA-2025-00548

  • CVE-2025-3230MedMay 30, 2025
    risk 0.28cvss 5.4epss 0.00

    Mattermost versions 10.7.x <= 10.7.0, 10.6.x <= 10.6.2, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fails to properly invalidate personal access tokens upon user deactivation, allowing deactivated users to maintain full system access by exploiting access token validation flaws via…

  • CVE-2025-2475MedApr 14, 2025
    risk 0.28cvss 5.4epss 0.00

    Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to invalidate the cache when a user account is converted to a bot which allows an attacker to login to the bot exactly one time via normal credentials.

  • CVE-2024-56128MedDec 18, 2024
    risk 0.28cvss 5.3epss 0.01

    Incorrect Implementation of Authentication Algorithm in Apache Kafka's SCRAM implementation. Issue Summary: Apache Kafka's implementation of the Salted Challenge Response Authentication Mechanism (SCRAM) did not fully adhere to the requirements of RFC 5802 [1]. Specifically, as…

  • CVE-2022-20923MedSep 8, 2022
    risk 0.26cvss 4.0epss 0.01

    A vulnerability in the IPSec VPN Server authentication functionality of Cisco Small Business RV110W, RV130, RV130W, and RV215W Routers could allow an unauthenticated, remote attacker to bypass authentication controls and access the IPSec VPN network. This vulnerability is due to…

  • CVE-2024-32879MedApr 24, 2024
    risk 0.25cvss 4.9epss 0.01

    Python Social Auth is a social authentication/registration mechanism. Prior to version 5.4.1, due to default case-insensitive collation in MySQL or MariaDB databases, third-party authentication user IDs are not case-sensitive and could cause different IDs to match. This issue…

  • CVE-2024-5658MedJun 6, 2024
    risk 0.24cvss 4.8epss 0.01

    The CraftCMS plugin Two-Factor Authentication through 3.3.3 allows reuse of TOTP tokens multiple times within the validity period.

  • CVE-2026-32953MedMar 20, 2026
    risk 0.23cvss 4.6epss 0.00

    Tillitis TKey Client package is a Go package for a TKey client. Versions 1.2.0 and below contain a critical bug in the tkeyclient Go module which causes 1 out of every 256 User Supplied Secrets (USS) to be silently ignored, producing the same Compound Device Identifier…

  • CVE-2024-41829LowJul 22, 2024
    risk 0.23cvss 3.5epss 0.00

    In JetBrains TeamCity before 2024.07 an OAuth code for JetBrains Space could be stolen via Space Application connection

  • CVE-2025-2571MedMay 30, 2025
    risk 0.20cvss 4.2epss 0.00

    Mattermost versions 10.7.x <= 10.7.0, 10.6.x <= 10.6.2, 10.5.x <= 10.5.3, 9.11.x <= 9.11.12 fail to clear Google OAuth credentials when converting user accounts to bot accounts, allowing attackers to gain unauthorized access to bot accounts via the Google OAuth signup flow.

  • CVE-2024-36250LowNov 9, 2024
    risk 0.20cvss 3.1epss 0.00

    Mattermost versions 9.11.x <= 9.11.2, and 9.5.x <= 9.5.10 fail to protect the mfa code against replay attacks, which allows an attacker to reuse the MFA code within ~30 seconds

  • CVE-2024-10214LowOct 28, 2024
    risk 0.16cvss 3.5epss 0.00

    Mattermost versions 9.11.X <= 9.11.1, 9.5.x <= 9.5.9 icorrectly issues two sessions when using desktop SSO - one in the browser and one in desktop with incorrect settings.

  • CVE-2026-59309CriJul 30, 2026
    risk 0.00cvss 9.8epss 0.01

    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.

  • CVE-2026-66028MedJul 27, 2026
    risk 0.00cvss 6.7epss 0.00

    Ekushey Project Manager CRM through version 5.0 contains a missing uniqueness constraint vulnerability that allows authenticated administrators to create duplicate client accounts with identical email and password credentials. Attackers can exploit the lack of email field…

  • CVE-2026-57852MedJul 20, 2026
    risk 0.00cvss 5.6epss 0.00

    Grav CMS scheduler-webhook plugin contains an authentication bypass vulnerability that allows unauthenticated remote attackers to trigger configured scheduled jobs by exploiting a short-circuit logic flaw in the webhook token validation. Attackers can send a single…

  • CVE-2026-50360HigJul 14, 2026
    risk 0.00cvss 8.8epss 0.01

    Incorrect implementation of authentication algorithm in Windows SMB Server allows an authorized attacker to elevate privileges over a network.

  • CVE-2024-35190MedMay 17, 2024
    risk 0.00cvss 5.8epss 0.01

    Asterisk is an open source private branch exchange and telephony toolkit. After upgrade to 18.23.0, ALL unauthorized SIP requests are identified as PJSIP Endpoint of local asterisk server. This vulnerability is fixed in 18.23.1, 20.8.1, and 21.3.1.

  • CVE-2023-39953MedAug 10, 2023
    risk 0.00cvss 4.8epss 0.01

    user_oidc provides the OIDC connect user backend for Nextcloud, an open-source cloud platform. Starting in version 1.0.0 and prior to version 1.3.3, missing verification of the issuer would have allowed an attacker to perform a man-in-the-middle attack returning corrupted or…

  • CVE-2022-41985HigMay 10, 2023
    risk 0.00cvss 8.6epss 0.01

    An authentication bypass vulnerability exists in the Authentication functionality of Weston Embedded uC-FTPs v 1.98.00. A specially crafted set of network packets can lead to authentication bypass and denial of service. An attacker can send a sequence of unauthenticated packets…