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CWE-287

4,511 CVEs • Abstraction: Class • Likelihood of Exploit: High

Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

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CVEs (4,511)

CVE
VENDORS
PRODUCTS
UPDATED
PUBLISHED
CVSS
1Redhat
1Single Sign On
Jun 17, 2026
Jun 1, 2021
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
A flaw was found in keycloak as shipped in Red Hat Single Sign-On 7.4 where IDN homograph attacks are possible. A malicious user can register himself with a name already registered and trick admin to grant him extra priv...Show more
A flaw was found in keycloak as shipped in Red Hat Single Sign-On 7.4 where IDN homograph attacks are possible. A malicious user can register himself with a name already registered and trick admin to grant him extra privileges.Show less
1Dav Cogs Project
1Dav Cogs
Jun 17, 2026
May 28, 2021
N/A· v4
7.3 HIGH· v3
7.5 HIGH· v2
Roomer is a discord bot cog (extension) which provides automatic voice channel generation as well as private voice and text channels. A vulnerability has been discovered allowing discord users to get the ``manage channel...Show more
Roomer is a discord bot cog (extension) which provides automatic voice channel generation as well as private voice and text channels. A vulnerability has been discovered allowing discord users to get the ``manage channel`` permissions in a private VC they have joined. This allowed them to make changes to or delete the voice channel they have taken over. The exploit does not allow access or control to any other channels in the server. Upgrade to version 1.0.1 for a patched version of the cog. As a workaround you may disable private VCs in your guild(server) or unload the roomer cog to render the exploit unusable.Show less
1Authelia
1Authelia
Jun 17, 2026
May 28, 2021
N/A· v4
10.0 CRITICAL· v3
7.5 HIGH· v2
Authelia is a a single sign-on multi-factor portal for web apps. This affects uses who are using nginx ngx_http_auth_request_module with Authelia, it allows a malicious individual who crafts a malformed HTTP request to b...Show more
Authelia is a a single sign-on multi-factor portal for web apps. This affects uses who are using nginx ngx_http_auth_request_module with Authelia, it allows a malicious individual who crafts a malformed HTTP request to bypass the authentication mechanism. It additionally could theoretically affect other proxy servers, but all of the ones we officially support except nginx do not allow malformed URI paths. The problem is rectified entirely in v4.29.3. As this patch is relatively straightforward we can back port this to any version upon request. Alternatively we are supplying a git patch to 4.25.1 which should be relatively straightforward to apply to any version, the git patches for specific versions can be found in the references. The most relevant workaround is upgrading. You can also add a block which fails requests that contains a malformed URI in the internal location block.Show less
1Kiali
1Kiali
Jun 17, 2026
May 28, 2021
N/A· v4
6.5 MEDIUM· v3
5.8 MEDIUM· v2
An authentication bypass vulnerability was found in Kiali in versions before 1.31.0 when the authentication strategy `OpenID` is used. When RBAC is enabled, Kiali assumes that some of the token validation is handled by t...Show more
An authentication bypass vulnerability was found in Kiali in versions before 1.31.0 when the authentication strategy `OpenID` is used. When RBAC is enabled, Kiali assumes that some of the token validation is handled by the underlying cluster. When OpenID `implicit flow` is used with RBAC turned off, this token validation doesn't occur, and this allows a malicious user to bypass the authentication.Show less
1Sysjust
1Cts Web
Jun 17, 2026
May 28, 2021
N/A· v4
5.4 MEDIUM· v3
5.5 MEDIUM· v2
The CTS Web transaction system related to authentication management is implemented incorrectly. After login, remote attackers can manipulate cookies to access other accounts and trade in the stock market with spoofed ide...Show more
The CTS Web transaction system related to authentication management is implemented incorrectly. After login, remote attackers can manipulate cookies to access other accounts and trade in the stock market with spoofed identity.Show less
1Sysjust
1Cts Web
Jun 17, 2026
May 28, 2021
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
The CTS Web transaction system related to authentication and session management is implemented incorrectly, which allows remote unauthenticated attackers can send a large number of valid usernames, and force those logged...Show more
The CTS Web transaction system related to authentication and session management is implemented incorrectly, which allows remote unauthenticated attackers can send a large number of valid usernames, and force those logged-in account to log out, causing the user to be unable to access the servicesShow less
1Redhat
1Ansible Tower
Jun 17, 2026
May 27, 2021
N/A· v4
7.1 HIGH· v3
3.6 LOW· v2
A security flaw was found in Ansible Tower when requesting an OAuth2 token with an OAuth2 application. Ansible Tower uses the token to provide authentication. This flaw allows an attacker to obtain a refresh token that d...Show more
A security flaw was found in Ansible Tower when requesting an OAuth2 token with an OAuth2 application. Ansible Tower uses the token to provide authentication. This flaw allows an attacker to obtain a refresh token that does not expire. The original token granted to the user still has access to Ansible Tower, which allows any user that can gain access to the token to be fully authenticated to Ansible Tower. This flaw affects Ansible Tower versions before 3.6.4 and Ansible Tower versions before 3.5.6.Show less
1Versa Networks
1Versa Director
Nov 21, 2024
May 26, 2021
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
In Versa Director, the un-authentication request found.
2Fedoraproject
Yubico
2Fedora
Pam U2f
Jun 17, 2026
May 26, 2021
N/A· v4
6.8 MEDIUM· v3
4.6 MEDIUM· v2
Yubico pam-u2f before 1.1.1 has a logic issue that, depending on the pam-u2f configuration and the application used, could lead to a local PIN bypass. This issue does not allow user presence (touch) or cryptographic sign...Show more
Yubico pam-u2f before 1.1.1 has a logic issue that, depending on the pam-u2f configuration and the application used, could lead to a local PIN bypass. This issue does not allow user presence (touch) or cryptographic signature verification to be bypassed, so an attacker would still need to physically possess and interact with the YubiKey or another enrolled authenticator. If pam-u2f is configured to require PIN authentication, and the application using pam-u2f allows the user to submit NULL as the PIN, pam-u2f will attempt to perform a FIDO2 authentication without PIN. If this authentication is successful, the PIN requirement is bypassed.Show less
5Bluetooth
DebianFedoraproject+2 more
19Ac 1550 Firmware
Ac 3165 FirmwareAc 3168 Firmware+16 more
Jun 17, 2026
May 24, 2021
N/A· v4
4.2 MEDIUM· v3
4.3 MEDIUM· v2
Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure)...Show more
Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit at a time.Show less
1Bluetooth
1Mesh Profile
Jun 17, 2026
May 24, 2021
N/A· v4
7.5 HIGH· v3
2.9 LOW· v2
Mesh Provisioning in the Bluetooth Mesh profile 1.0 and 1.0.1 may permit a nearby device (without possession of the AuthValue used in the provisioning protocol) to determine the AuthValue via a brute-force attack (unless...Show more
Mesh Provisioning in the Bluetooth Mesh profile 1.0 and 1.0.1 may permit a nearby device (without possession of the AuthValue used in the provisioning protocol) to determine the AuthValue via a brute-force attack (unless the AuthValue is sufficiently random and changed each time).Show less
1Linux
1Linux Kernel
Nov 20, 2024
May 18, 2021
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
TCP firewalls could be circumvented by sending a SYN Packets with other flags (like e.g. RST flag) set, which was not correctly discarded by the Linux TCP stack after firewalling.
1Belden
2Hirschmann Hios
Hisecos
Jun 17, 2026
May 17, 2021
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
Hirschmann HiOS 07.1.01, 07.1.02, and 08.1.00 through 08.5.xx and HiSecOS 03.3.00 through 03.5.01 allow remote attackers to change the credentials of existing users.
1Liferay
2Dxp
Liferay Portal
Jul 9, 2026
May 16, 2021
N/A· v4
7.5 HIGH· v3
5.0 MEDIUM· v2
The SimpleCaptcha implementation in Liferay Portal 7.3.4, 7.3.5 and Liferay DXP 7.3 before fix pack 1 does not invalidate CAPTCHA answers after it is used, which allows remote attackers to repeatedly perform actions prot...Show more
The SimpleCaptcha implementation in Liferay Portal 7.3.4, 7.3.5 and Liferay DXP 7.3 before fix pack 1 does not invalidate CAPTCHA answers after it is used, which allows remote attackers to repeatedly perform actions protected by a CAPTCHA challenge by reusing the same CAPTCHA answer.Show less
1Blackberry
1Workspaces Server
Jun 17, 2026
May 13, 2021
N/A· v4
8.8 HIGH· v3
6.5 MEDIUM· v2
An Authentication Bypass vulnerability in the SAML Authentication component of BlackBerry Workspaces Server (deployed with Appliance-X) version(s) 10.1, 9.1 and earlier could allow an attacker to potentially gain access...Show more
An Authentication Bypass vulnerability in the SAML Authentication component of BlackBerry Workspaces Server (deployed with Appliance-X) version(s) 10.1, 9.1 and earlier could allow an attacker to potentially gain access to the application in the context of the targeted user’s account.Show less
5Arista
CiscoDebian+2 more
1661100 4p Firmware
1100 8p Firmware1100 Firmware+163 more
Jun 17, 2026
May 11, 2021
N/A· v4
5.3 MEDIUM· v3
2.9 LOW· v2
An issue was discovered in the kernel in NetBSD 7.1. An Access Point (AP) forwards EAPOL frames to other clients even though the sender has not yet successfully authenticated to the AP. This might be abused in projected...Show more
An issue was discovered in the kernel in NetBSD 7.1. An Access Point (AP) forwards EAPOL frames to other clients even though the sender has not yet successfully authenticated to the AP. This might be abused in projected Wi-Fi networks to launch denial-of-service attacks against connected clients and makes it easier to exploit other vulnerabilities in connected clients.Show less
1F5
1Big Ip Access Policy Manager
Jun 17, 2026
May 10, 2021
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
On version 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, 12.1.x before 12.1.6, and all versions of 16.0.x and 11.6.x., BIG-IP APM AD (Active Directory) authentication can be bypassed via a spoofed AS-...Show more
On version 15.1.x before 15.1.3, 14.1.x before 14.1.4, 13.1.x before 13.1.4, 12.1.x before 12.1.6, and all versions of 16.0.x and 11.6.x., BIG-IP APM AD (Active Directory) authentication can be bypassed via a spoofed AS-REP (Kerberos Authentication Service Response) response sent over a hijacked KDC (Kerberos Key Distribution Center) connection or from an AD server compromised by an attacker. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.Show less
1Trendmicro
1Im Security
Jun 17, 2026
May 10, 2021
N/A· v4
8.1 HIGH· v3
6.8 MEDIUM· v2
A weak session token authentication bypass vulnerability in Trend Micro IM Security 1.6 and 1.6.5 could allow an remote attacker to guess currently logged-in administrators' session session token in order to gain access...Show more
A weak session token authentication bypass vulnerability in Trend Micro IM Security 1.6 and 1.6.5 could allow an remote attacker to guess currently logged-in administrators' session session token in order to gain access to the product's web management interface.Show less
1Atlassian
1Connect Spring Boot
Jun 17, 2026
May 10, 2021
N/A· v4
8.8 HIGH· v3
6.5 MEDIUM· v2
Broken Authentication in Atlassian Connect Spring Boot (ACSB) in version 1.1.0 before 2.1.3 and from version 2.1.4 before 2.1.5: Atlassian Connect Spring Boot is a Java Spring Boot package for building Atlassian Connect...Show more
Broken Authentication in Atlassian Connect Spring Boot (ACSB) in version 1.1.0 before 2.1.3 and from version 2.1.4 before 2.1.5: Atlassian Connect Spring Boot is a Java Spring Boot package for building Atlassian Connect apps. Authentication between Atlassian products and the Atlassian Connect Spring Boot app occurs with a server-to-server JWT or a context JWT. Atlassian Connect Spring Boot versions 1.1.0 before 2.1.3 and versions 2.1.4 before 2.1.5 erroneously accept context JWTs in lifecycle endpoints (such as installation) where only server-to-server JWTs should be accepted, permitting an attacker to send authenticated re-installation events to an app.Show less
1Hongdian
1H8922 Firmware
Jun 17, 2026
May 6, 2021
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
Hongdian H8922 3.0.5 devices have an undocumented feature that allows access to a shell as a superuser. To connect, the telnet service is used on port 5188 with the default credentials of root:superzxmn.