EUVD-2026-93940

Gitea's OAuth2 and OpenID Connect sign-in paths do not require a WebAuthn challenge when WebAuthn is the account's only configured second factor. A party able to authenticate through the affected external identity flow can obtain a full session without the passkey verification enforced during...

dovecot: Dovecot: Authentication bypass via incorrect OAuth2 token validation

A flaw was found in Dovecot. This vulnerability allows an attacker to bypass authentication by exploiting how OAuth2 tokens are validated. If an OAuth2 token response does not include a scope claim, Dovecot incorrectly uses the audience claim in its place for authorization checks. This can lead t...

Important: Red Hat Security Advisory: dovecot security, bug fix, and enhancement update

An update for dovecot is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

PT-2026-107187

Name of the Vulnerable Software and Affected Versions Gitea affected versions not specified Description The OAuth2 and OpenID Connect sign-in paths fail to require a WebAuthn challenge when WebAuthn is the only configured second factor for an account. This allows an attacker who can authenticate...

CVE-2026-73278: Improper Authentication

Gitea's OAuth2 and OpenID Connect sign-in paths do not require a WebAuthn challenge when WebAuthn is the account's only configured second factor. A party able to authenticate through the affected external identity flow can obtain a full session without the passkey verification enforced during...

PT-2026-107291

Name of the Vulnerable Software and Affected Versions Gitea affected versions not specified Description The OAuth2 token endpoint fails to verify if a token submitted with the refresh token grant type is actually a refresh token. This allows an unexpired access token for the same OAuth2 applicati...

CVE-2026-101023: Improper Authentication

Gitea's OAuth2 token endpoint verified the signature and grant of a token submitted with the refreshtoken grant type, but not that the token was a refresh token. An unexpired access token for the same OAuth2 application and grant could be exchanged for a new access token and refresh token. Whoeve...

[SECURITY] [DLA 4822-1] ruby-oauth2 security update

------------------------------------------------------------------------- Debian LTS Advisory DLA-4822-1 [email protected] https://www.debian.org/lts/security/ Simon Quigley October 05, 2026 https://wiki.debian.org/LTS -...

Debian dla-4822 : ruby-oauth2 - security update

The remote Debian 12 host has a package installed that is affected by a vulnerability as referenced in the dla-4822 advisory. - ------------------------------------------------------------------------- Debian LTS Advisory DLA-4822-1 [email protected] https://www.debian.org/lts/security/...

CVE-2026-105118

OpenAM before 16.1.3 contains an open redirect vulnerability that allows unauthenticated attackers to redirect users by supplying an unverified idtokenhint to the /oauth2/connect/endSession endpoint. Attackers can name any realm client in a forged hint to redirect victims to any registered...

CVE-2026-105119

OpenAM before 16.1.3 applies its OAuth2 Provider PKCE enforcement only to authorization requests whose responsetype is exactly code, so codes issued through OpenID Connect hybrid flows code token, code idtoken, code token idtoken carry no bound challenge. An attacker who intercepts such a code ca...

CVE-2026-105114

OpenAM before 16.1.3 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject script by supplying crafted parameters rendered unencoded on the OAuth2 authorization error page. Attackers can lure victims to a crafted /oauth2/authorize link with repeat...

EUVD-2026-92023

OpenAM before 16.1.3 applies its OAuth2 Provider PKCE enforcement only to authorization requests whose responsetype is exactly code, so codes issued through OpenID Connect hybrid flows code token, code idtoken, code token idtoken carry no bound challenge. An attacker who intercepts such a code ca...

EUVD-2026-92022

OpenAM before 16.1.3 contains an open redirect vulnerability that allows unauthenticated attackers to redirect users by supplying an unverified idtokenhint to the /oauth2/connect/endSession endpoint. Attackers can name any realm client in a forged hint to redirect victims to any registered...

CVE-2026-105118 OpenAM before 16.1.3 Open Redirect via Unverified id_token_hint in endSession

OpenAM before 16.1.3 contains an open redirect vulnerability that allows unauthenticated attackers to redirect users by supplying an unverified idtokenhint to the /oauth2/connect/endSession endpoint. Attackers can name any realm client in a forged hint to redirect victims to any registered...

CVE-2026-105118

OpenAM versions prior to 16.1.3 are susceptible to an open redirect vulnerability. The root cause is the failure to verify the id_token_hint provided to the /oauth2/connect/endSession endpoint. Unauthenticated attackers can exploit this by supplying a forged hint to redirect victims to any regist...

CVE-2026-105118 OpenAM before 16.1.3 Open Redirect via Unverified id_token_hint in endSession

OpenAM before 16.1.3 contains an open redirect vulnerability that allows unauthenticated attackers to redirect users by supplying an unverified idtokenhint to the /oauth2/connect/endSession endpoint. Attackers can name any realm client in a forged hint to redirect victims to any registered...

CVE-2026-105118 OpenAM before 16.1.3 Open Redirect via Unverified id_token_hint in endSession

OpenAM before 16.1.3 contains an open redirect vulnerability that allows unauthenticated attackers to redirect users by supplying an unverified idtokenhint to the /oauth2/connect/endSession endpoint. Attackers can name any realm client in a forged hint to redirect victims to any registered...

CVE-2026-105119

OpenAM versions prior to 16.1.3 are vulnerable to a PKCE enforcement bypass via OAuth 2.0 hybrid flows . The root cause is that the software only applies Proof Key for Code Exchange (PKCE) enforcement to authorization requests where the response_type is exactly code. Consequently, codes issued th...

CVE-2026-105114 OpenAM before 16.1.3 Reflected XSS via OAuth2 Authorization Error Page

OpenAM before 16.1.3 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject script by supplying crafted parameters rendered unencoded on the OAuth2 authorization error page. Attackers can lure victims to a crafted /oauth2/authorize link with repeat...