Weakness (CWE)
CWE-305: Authentication Bypass by Primary Weakness
The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.
Source: MITRE CWE-305
187 results · Feed
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High 8.1
Keycloak-services: keycloak-services: account takeover via stale sso_auth note in organization identity-first login
A flaw was found in the Organization identity-first login flow of the Keycloak authentication server. Keycloak is an open-source identity and access management solution used to secure modern applications and services. The issue occurs when an attacker who bel…
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Critical 9.8
Apache Qpid Proton C: Potential authentication bypass: regular AMQP frames can be sent as SASL frames
When dispatching SASL frames to authenticate the peer, Proton will also dispatch AMQP frames if they claim to be SASL frames. This allows authentication bypass. However there will be no user name set so the effects depend on how the application deals with thi…
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Medium 5.3
Remote unauthenticated information disclosure and denial of service due to unauthenticated service access
A misconfiguration issue in the affected service in Control-M/Enterprise Manager and Control-M/Server may allow unauthenticated remote users to access certain service functionality, which could potentially result in information exposure or affect service avai…
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Medium 6.5
WordPress 2Way VideoCalls and Random Chat plugin <= 6.1.5 - Broken Authentication vulnerability
Authentication Bypass by Primary Weakness vulnerability in VideoWhisper.com 2Way VideoCalls and Random Chat webcam-2way-videochat allows Authentication Abuse.This issue affects 2Way VideoCalls and Random Chat: from n/a through 6.1.5.
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Critical 9.0CVE-2026-111283 Public exploit
BMC Helix Network Management 26.3.00 before 26.3.01 Authentication Bypass via SAML Configuration
BMC Helix Network Management on-prem 26.3.00 before 26.3.01 contains an authentication bypass vulnerability that allows unauthenticated attackers to log in as the local administrator with any password when SAML single sign-on is configured. Attackers can subm…
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High 8.1
Nginx UI: Authentication bypass: password login does not enforce a passkey-only second factor (2FA bypass)
Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0, POST /api/login checks EnabledOTP but does not require a WebAuthn assertion when EnabledPasskey is true and no TOTP secret is configured. A passkey-only account is therefore is…
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Critical 9.1
Gitea built-in SSH server authentication bypass through key case folding
When Gitea's built-in SSH server is enabled (`START_SSH_SERVER = true`), the presented public key was looked up with an SQL `LIKE` comparison of its encoded content, which is case-insensitive on some databases, including the default SQLite. An attacker who ca…
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Critical 9.1
Apache MINA SSHD: Asynchronous authentication can bypass signature verification
Authentication bypass in sshd-core in Apache MINA SSHD versions 2.0.0 to 2.19.0 and 3.0.0-M1 to 3.0.0-M5 for a certain (presumed rare) way to implement an SSH server. Apache MINA SSHD is a Java library for client- and server-side SSH. In the server part of th…
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Critical 9.1
Apache MINA SSHD: LDAP injection in sshd-ldap
Authentication bypass via LDAP injection in component sshd-ldap in Apache MINA SSHD versions 1.2.0 to 2.19.0 and 3.0.0-M1 to 3.0.0-M5. Apache MINA SSHD is a Java library for client-side and server-side SSH. The optional sshd-ldap component provides support fo…
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Medium 4.6
HMAC Confirmation Token Unbinding in zscaler-mcp-server
Zscaler MCP Server versions 0.7.0 and 0.7.1 has an issue where HMAC confirmation tokens were not bound to the target resource identifier, allowing an MCP client or agent to replay a token generated for one resource to affect another resource of the same type.…
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Medium 6.5
Busybox: busybox: httpd misidentifies yescrypt password hashes as plaintext, inverting authentication
BusyBox httpd treats yescrypt ($y$) password hashes as plaintext during Basic Authentication, inverting the authentication check.
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Critical 9.1
`require_confirmed_with` is not enforced on the action and fails open on an unreadable attribute in AshAuthentication
Authentication Bypass by Primary Weakness vulnerability in team-alembic AshAuthentication allows an unconfirmed user to obtain a session, defeating a mandatory email confirmation requirement. AshAuthentication.Strategy.Password.Actions.check_user/2 decides wh…
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High 7.7
Authentication bypass leads to unauthorised access to N-central
An authentication bypass in N-central < 2026.3 HF 3 leads to authentication bypass in internal only APIs
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High 8.8
PaperCut MF/NG: Authentication Bypass
An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the completion o…
KEV Aug 31, 2026 -
Medium 5.1
Authentication Bypass in Metasploit JSON-RPC Service When DB Health Check Fails
A logic vulnerability (fail-open condition) has been identified within the Metasploit Framework's JSON-RPC web service interface. When an exception occurs during the database health check (db.check) and the environment variable MSF_WS_JSON_RPC_API_TOKEN is no…
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Critical 9.8
Punk::Plugin::TOTP versions before 0.05 for Perl accept another account's recovery code at the two-factor challenge because totp_use_recovery compares user identifiers numerically
Punk::Plugin::TOTP versions before 0.05 for Perl accept another account's recovery code at the two-factor challenge because totp_use_recovery compares user identifiers numerically. The helper searches the recovery model for the submitted code's digest alone, …
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High 7.4
Apache Hive: Unauthenticated authentication bypass in HiveServer2 HTTP SAML bearer-token validation allows impersonation of any Hive user
An improper authentication vulnerability in HiveServer2 SAML bearer-token validation in Apache Hive 4.0.0 through 4.2.0 (and later unreleased branches) on deployments using HTTP transport with hive.server2.authentication=SAML allows an unauthenticated network…
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Critical 9.3
Admin Account Takeover via Path Traversal in vsDesk
An insecure deserialization vulnerability in vsDesk allows a remote attacker to gain unauthorized administrative access. By manipulating application configuration data, an attacker can force the system to authenticate against an arbitrary LDAP server and prov…
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Critical 9.8
Lemonldap::NG::Portal versions from 2.0.0 before 2.16.9, from 2.17.0 before 2.21.5, from 2.22.0 before 2.23.3 for Perl allow authentication bypass via an OAuth2 state parameter stored as an SSO session in the GitHub and LinkedIn backends
Lemonldap::NG::Portal versions from 2.0.0 before 2.16.9, from 2.17.0 before 2.21.5, from 2.22.0 before 2.23.3 for Perl allow authentication bypass via an OAuth2 state parameter stored as an SSO session in the GitHub and LinkedIn backends. Before redirecting t…
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Medium 5.3
Register Bypass in Universal Sotware's E-Municipality
Authentication bypass by primary weakness vulnerability in Universal Software Inc. E-Municipality allows Exploitation of Trusted Identifiers. This issue affects E-Municipality: from 20251127 before 20260204.
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High 7.6
Bypassing passkey entry in legacy pairing
Passkey entry Bluetooth LE legacy pairing can be bypassed in the RS9116W and SiWx917 by manipulating the temporary key value. See vulnerability B-E3 in the related paper below.
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High 8.8
Bluetooth re-pairing with legitimate device can use lower security level
Re-pairing with a legitimate device can use a lower security level than previous making brute-forcing the LTK easier. See V4 in the BLERP paper linked below.
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High 8.8
sysctl and platform-op locks open to abuse
[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To manage the system, sysctl and platform operations are used by the control domain or a possible Xenstore domain. Some of these o…
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Medium 4.3
Keycloak-services: keycloak-services: incomplete fix for ciba brute-force lockout bypass at token redemption
A flaw was found in the keycloak-services component of Keycloak. This issue is an incomplete fix for CVE-2026-9798, where brute-force protection checks were added to the Client-Initiated Backchannel Authentication (CIBA) initiation handler but were omitted fr…
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Medium 5.4
Deactivated guest accounts can authenticate via magic-link token in Mattermost REST API login endpoint
Mattermost versions 11.7.x <= 11.7.2, 11.6.x <= 11.6.4 fail to verify whether a guest account is deactivated before creating a session in the magic-link token login path, which allows a deactivated guest user to obtain a fully functional session via a magic-l…
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Medium 5.9
Deactivated user accounts can continue to obtain valid OAuth access tokens via refresh token grant in Mattermost
Mattermost versions 11.7.x <= 11.7.2, 11.6.x <= 11.6.4, 10.11.x <= 10.11.19 fail to invalidate OAuth refresh tokens upon user account deactivation, which allows a deactivated user or an attacker in possession of a valid refresh token to obtain new functional …
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Medium 5.3
Dell Client Platform BIOS contains an Authentication Bypass by Primary Weakness vulnerability. An unauthenticated attac…
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High 7.5CVE-2026-8932 Public exploit
incomplete mTLS config matching in conn reuse
libcurl would reuse a previously created connection even when some mTLS config related option had been changed that should have prohibited reuse. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them m…
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Critical 9.0
Unauthenticated command injection in Control-M/Server communication command
A Control-M/Server communication command does not sufficiently filter or sanitize user-supplied input. Under certain conditions, this issue may allow an unauthenticated attacker to execute unauthorized commands on the affected server, potentially leading to c…
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Critical 9.4
Rancher Privilege Escalation from Project Owner to Host
Improper privilege handling could be used by users with Project Owner role to escalate privileges, in Rancher versions 2.14 before 2.14.2, 2.13 before 2.13.6, and 2.12 before 2.12.10.
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High 8.7
Authentication Bypass for SafeLine SL6 and SL6+
The SafeLine SL6 and SL6+ devices integrated into elevator emergency intercom systems are vulnerable to an authentication bypass. This vulnerability allows attackers to bypass authentication requirements and access the device's configuration service via the B…
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Medium 6.6
Freelance Security Lock – Access to Windows OS
Authentication bypass by primary weakness vulnerability in ABB Freelance. This issue affects Freelance: through 2013, 2013 SP1, 2016, 2016 SP1, 2019, 2019 SP1, 2019 SP1 FP1, 2024.
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Critical 9.8CVE-2026-25555 Public exploit
OpenBullet2 0.3.2 Authentication Bypass via X-Api-Key Header
OpenBullet2 through version 0.3.2 contains an authentication bypass vulnerability in the API key authentication middleware that allows unauthenticated attackers to gain admin access by supplying an empty X-Api-Key header value. Attackers can exploit the middl…
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Medium 4.3
Keycloak: keycloak: brute-force protection bypass in ciba flow
A flaw was found in Keycloak, an open-source identity and access management solution. When a user account is temporarily locked due to repeated failed login attempts, an attacker with valid client credentials can exploit the Client-Initiated Backchannel Authe…
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High 7.6
Improper handling of factor key state in the multi-factor authentication management feature in Devolutions Server allow…
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High 7.8
Missing exit out of permission check in haveged could lead to root exploit
In `src/havegecmd.c`, the `socket_handler` function performs a credential check on the abstract UNIX socket (`\0/sys/entropy/haveged`). However, while it detects if the connecting user is not root (`cred.uid != 0`) and prepares a negative acknowledgement (`AS…
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Low 3.1
OAuth authorization code client binding not enforced during token redemption in Mattermost
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to enforce client identity binding during the OAuth authorization code redemption flow which allows an authenticated OAuth client to redeem authorization codes issued to a different client via a c…
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High 8.6CVE-2026-2652 EPSS 21%
Authentication Bypass in mlflow/mlflow
A vulnerability in mlflow/mlflow versions 3.9.0 and earlier allows unauthenticated access to certain FastAPI routes when the server is started with authentication enabled (`--app-name basic-auth`) and served via uvicorn (ASGI). The FastAPI permission middlewa…
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Medium 6.5
wrong reuse of HTTP Negotiate connection
libcurl might in some circumstances reuse the wrong connection when asked to do an authenticated HTTP(S) request after a Negotiate-authenticated one, when both use the same host. libcurl features a pool of recent connections so that subsequent requests can re…
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High 8.3
Aap-controller: aap-gateway: account hijacking and unauthorized access via unverified email linking
A flaw was found in the AAP gateway. The user auto-link strategy, introduced in AAP 2.6, automatically links an external Identity Provider (IDP) identity to an existing AAP user account based on email matching without verifying email ownership. This allows a …