Incorrect Implementation of Authentication Algorithm

Overview github.com/mattermost/mattermost/server/channels/app is a private-cloud Slack alternative Affected versions of this package are vulnerable to Incorrect Implementation of Authentication Algorithm due to improper validation of OAuth state tokens during the OpenID Connect authentication...

CVE-2025-12419

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 a user account via manipulation of...

CVE-2025-12419 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 a user account via manipulation of...

CVE-2025-12419 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 a user account via manipulation of...

CVE-2025-12419

Mattermost contains an OAuth/OpenID Connect validation flaw where OAuth state tokens are not properly validated during authentication, enabling an authenticated attacker with team-creation privileges to take over a user account by manipulating data in the OAuth completion flow. The issue affects ...

CVE-2025-12419 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 a user account via manipulation of...

CVE-2025-12419: Incorrect Implementation of Authentication Algorithm

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 a user account via manipulation of...

CVE-2025-12414

An attacker could take over a Looker account in a Looker instance configured with OIDC authentication, due to email address string normalization.Looker-hosted and Self-hosted were found to be vulnerable. This issue has already been mitigated for Looker-hosted. Self-hosted instances must be upgrad...

The vulnerability of the tools for working with the OpenID Connect protocol, related to improper authorization, allows attackers to compromise the confidentiality, integrity, and accessibility of protected information.

The vulnerability of the tools for working with the OpenID Connect protocol is related to improper authentication. Exploiting this vulnerability can allow a malicious actor to compromise the confidentiality, integrity, and accessibility of the protected information...

EUVD-2025-198285

An attacker could take over a Looker account in a Looker instance configured with OIDC authentication, due to email address string normalization.Looker-hosted and Self-hosted were found to be vulnerable. This issue has already been mitigated for Looker-hosted. Self-hosted instances must be upgrad...

CVE-2025-12414

An attacker could take over a Looker account in a Looker instance configured with OIDC authentication, due to email address string normalization.Looker-hosted and Self-hosted were found to be vulnerable. This issue has already been mitigated for Looker-hosted. Self-hosted instances must be upgrad...

CVE-2025-12414 Looker account compromise via punycode homograph attack

An attacker could take over a Looker account in a Looker instance configured with OIDC authentication, due to email address string normalization.Looker-hosted and Self-hosted were found to be vulnerable. This issue has already been mitigated for Looker-hosted. Self-hosted instances must be upgrad...

CVE-2025-12414

CVE-2025-12414 affects Looker installations using OIDC authentication, due to email address string normalization. Looker-hosted deployments are mitigated; self-hosted instances require upgrading to fixed versions (examples listed: 24.12.100+, 24.18.193+, 25.0.69+, 25.6.57+, 25.8.39+, 25.10.22+, 2...

CVE-2025-12414 Looker account compromise via punycode homograph attack

An attacker could take over a Looker account in a Looker instance configured with OIDC authentication, due to email address string normalization.Looker-hosted and Self-hosted were found to be vulnerable. This issue has already been mitigated for Looker-hosted. Self-hosted instances must be upgrad...

PT-2025-47566

An attacker could take over a Looker account in a Looker instance configured with OIDC authentication, due to email address string normalization.Looker-hosted and Self-hosted were found to be vulnerable. This issue has already been mitigated for Looker-hosted. Self-hosted instances must be upgrad...

OpenAM: Using arbitrary OIDC requested claims values in id_token and user_info is allowed

Summary If the "claimsparametersupported" parameter is activated, it is possible through the "oidc-claims-extension.groovy" script, to inject the value of choice into a claim contained in the idtoken or in the userinfo. Authorization function requests do not prevent a claims parameter containing ...

CVE-2025-64099

OpenAM prior to version 16.0.0 is vulnerable when the claims_parameter_supported parameter is enabled. The oidc-claims-extension.groovy script allows injecting arbitrary values into claims in id_token and user_info via a crafted claims parameter JSON during an authorize request, enabling potentia...

CVE-2025-64099 OpenAM allows use of arbitrary OIDC requested claims values in id_token and user_info

Open Access Management OpenAM is an access management solution. In versions prior to 16.0.0, if the "claimsparametersupported" parameter is activated, it is possible, thanks to the "oidc-claims-extension.groovy" script, to inject the value of one's choice into a claim contained in the idtoken or ...

EUVD-2025-131956

Open Access Management OpenAM is an access management solution. In versions prior to 16.0.0, if the "claimsparametersupported" parameter is activated, it is possible, thanks to the "oidc-claims-extension.groovy" script, to inject the value of one's choice into a claim contained in the idtoken or ...

Red Hat Single Sign-On 输入验证错误漏洞

Red Hat Single Sign-On is an authentication and access control system from Red Hat USA. The tool is responsible for authentication and access control functions for systems that support most authentication protocols Oauth, OpenId Connect, etc., and can easily integrate with most products such as...