CVE-2026-31869

Product/impact: Discourse, an open-source discussion platform, is affected by CVE-2026-31869 prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2. Root cause: The ComposerController#mentions endpoint can reveal hidden group membership to any authenticated user who can message the group by ...

CVE-2026-31869

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the ComposerControllermentions endpoint reveals hidden group membership to any authenticated user who can message the group. By supplying allowednames referencing a hidden-membership grou...

EUVD-2026-13496

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the ComposerControllermentions endpoint reveals hidden group membership to any authenticated user who can message the group. By supplying allowednames referencing a hidden-membership grou...

CVE-2026-31869 Discourse: Composer mentions endpoint leaks hidden group membership through PM `allowed_names` check

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the ComposerControllermentions endpoint reveals hidden group membership to any authenticated user who can message the group. By supplying allowednames referencing a hidden-membership grou...

PT-2026-26709

Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2026.3.0-latest.1 Discourse versions prior to 2026.2.1 Discourse versions prior to 2026.1.2 Description Discourse is an open-source discussion platform. Unauthenticated users can determine whether a specific user is...

PT-2026-26716

Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2026.3.0-latest.1 Discourse versions prior to 2026.2.1 Discourse versions prior to 2026.1.2 Description Discourse is an open-source discussion platform. A non-staff user with elevated group membership could access...

WordPress plugin Membership Plugin – Restrict Content 授权问题漏洞

WordPress and WordPress plugins are both products of the WordPress Foundation. WordPress is a blog platform developed using the PHP language. This platform allows for the creation of personal blog websites on servers based on PHP and MySQL. A WordPress plugin is an application that can be install...

PT-2026-26543

Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2026.3.0-latest.1 Discourse versions prior to 2026.2.1 Discourse versions prior to 2026.1.2 Description Discourse is an open-source discussion platform. The ComposerControllermentions API endpoint reveals hidden gro...

PT-2026-26554

The Membership Plugin – Restrict Content plugin for WordPress is vulnerable to Unvalidated Redirect in all versions up to, and including, 3.2.24. This is due to insufficient validation on the redirect url supplied via the 'rcp redirect' parameter. This makes it possible for unauthenticated...

CVE-2026-32755

Admidio is an open-source user management solution. In versions 5.0.6 and below, the savemembership action in modules/profile/profilefunction.php saves changes to a member's role membership start and end dates but does not validate the CSRF token. The handler checks stopmembership and...

CVE-2026-32755

Admidio is an open-source user management solution. In versions 5.0.6 and below, the savemembership action in modules/profile/profilefunction.php saves changes to a member's role membership start and end dates but does not validate the CSRF token. The handler checks stopmembership and...

CVE-2026-32755 Admidio is Missing CSRF Protection on Role Membership Date Changes

Admidio is an open-source user management solution. In versions 5.0.6 and below, the savemembership action in modules/profile/profilefunction.php saves changes to a member's role membership start and end dates but does not validate the CSRF token. The handler checks stopmembership and...

CVE-2026-32755 Admidio is Missing CSRF Protection on Role Membership Date Changes

Admidio is an open-source user management solution. In versions 5.0.6 and below, the savemembership action in modules/profile/profilefunction.php saves changes to a member's role membership start and end dates but does not validate the CSRF token. The handler checks stopmembership and...

CVE-2026-32755 Admidio is Missing CSRF Protection on Role Membership Date Changes

Admidio is an open-source user management solution. In versions 5.0.6 and below, the savemembership action in modules/profile/profilefunction.php saves changes to a member's role membership start and end dates but does not validate the CSRF token. The handler checks stopmembership and...

CVE-2026-32755

CVE-2026-32755 affects Admidio 5.0.6 and earlier. The save_membership action in modules/profile/profile_function.php does not validate the CSRF token, while stop_membership and remove_former_membership do. This allows an attacker to craft a hidden POST form to update a member’s membership start/e...

CVE-2026-33410

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have two authorization issues in the chat direct message API. First, when creating a direct message channel or adding users to an existing one, the targetgroups parameter was passed direct...

CVE-2026-28282

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a security flaw in the discourse-policy plugin which allowed a user with policy creation permission to gain membership access to any private/restricted groups. Once membership to a...

EUVD-2026-13243

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a security flaw in the discourse-policy plugin which allowed a user with policy creation permission to gain membership access to any private/restricted groups. Once membership to a...

CVE-2026-28282 Discourse vulnerable to group membership addition permission bypass via discourse-policy plugin

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a security flaw in the discourse-policy plugin which allowed a user with policy creation permission to gain membership access to any private/restricted groups. Once membership to a...

CVE-2026-28282 Discourse vulnerable to group membership addition permission bypass via discourse-policy plugin

Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a security flaw in the discourse-policy plugin which allowed a user with policy creation permission to gain membership access to any private/restricted groups. Once membership to a...