CVE-2026-33426: Missing Authorization

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, users with tag-editing permissions could edit and create synonyms for tags hidden in restricted tag groups, even if they lacked visibility into those tags. Versions 2026.3.0-latest.1,...

CVE-2026-33424: Incorrect Authorization

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an attacker can grant access to a private message topic through invites even after they lose access to that PM. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No know...

CVE-2026-33428: Incorrect Authorization

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a non-staff user with elevated group membership could access deleted posts belonging to any user due to an overly broad authorization check on the deleted posts index endpoint. Versions...

Discourse 安全漏洞

Discourse is Discourse open source set of open source community discussion platform. The platform includes features such as community , e-mail and chat rooms . Discourse has a security vulnerability that can be exploited by an attacker to cause a legitimate Discourse authorization page to display...

Discourse 安全漏洞

Discourse is an open-source community discussion platform developed by Discourse. This platform includes features such as communities, email communication, and chat rooms. Versions of Discourse prior to 2026.3.0-latest.1, as well as versions before 2026.2.1 and 2026.1.2, have security...

CVE-2026-33427: Missing Authorization

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an unauthenticated attacker can cause a legitimate Discourse authorization page to display an attacker-controlled domain, facilitating social engineering attacks against users. Versions...

CVE-2026-33425: Observable Discrepancy

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, unauthenticated users can determine whether a specific user is a member of a private group by observing changes in directory results when using the excludegroups parameter. Versions...

CVE-2026-33428 Discourse Allows Unauthorized Access to Deleted Posts Index via Group Membership

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a non-staff user with elevated group membership could access deleted posts belonging to any user due to an overly broad authorization check on the deleted posts index endpoint. Versions...

CVE-2026-33428 Discourse Allows Unauthorized Access to Deleted Posts Index via Group Membership

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a non-staff user with elevated group membership could access deleted posts belonging to any user due to an overly broad authorization check on the deleted posts index endpoint. Versions...

CVE-2026-33428

Summary: Discourse allows a non-staff user with elevated group membership to access deleted posts from any user due to an overly broad authorization check on the deleted posts index endpoint. Affected versions: prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2. Root cause (as stated): overly bro...

CVE-2026-33428

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a non-staff user with elevated group membership could access deleted posts belonging to any user due to an overly broad authorization check on the deleted posts index endpoint. Versions...

CVE-2026-33428 Discourse Allows Unauthorized Access to Deleted Posts Index via Group Membership

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a non-staff user with elevated group membership could access deleted posts belonging to any user due to an overly broad authorization check on the deleted posts index endpoint. Versions...

EUVD-2026-13912

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a non-staff user with elevated group membership could access deleted posts belonging to any user due to an overly broad authorization check on the deleted posts index endpoint. Versions...

CVE-2026-33427

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an unauthenticated attacker can cause a legitimate Discourse authorization page to display an attacker-controlled domain, facilitating social engineering attacks against users. Versions...

EUVD-2026-13910

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an unauthenticated attacker can cause a legitimate Discourse authorization page to display an attacker-controlled domain, facilitating social engineering attacks against users. Versions...

CVE-2026-33427 Discourse Authorization Page Displays Unvalidated Redirect Domain

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an unauthenticated attacker can cause a legitimate Discourse authorization page to display an attacker-controlled domain, facilitating social engineering attacks against users. Versions...

CVE-2026-33427 Discourse Authorization Page Displays Unvalidated Redirect Domain

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an unauthenticated attacker can cause a legitimate Discourse authorization page to display an attacker-controlled domain, facilitating social engineering attacks against users. Versions...

CVE-2026-33427

Discourse is affected by CVE-2026-33427. Before versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an unauthenticated attacker could cause a legitimate Discourse authorization page to display an attacker-controlled domain, enabling social engineering. A patch is included in 2026.3.0-latest.1, 20...

CVE-2026-33427 Discourse Authorization Page Displays Unvalidated Redirect Domain

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an unauthenticated attacker can cause a legitimate Discourse authorization page to display an attacker-controlled domain, facilitating social engineering attacks against users. Versions...

CVE-2026-33251

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an authorization bypass vulnerability in hidden Solved topics may allow unauthorized users to accept or unaccept solutions. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a...