CVE-2026-32951 Discourse: Authorization bypass in oneboxer via user-controlled category id

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, an authenticated user can obtain shared draft topic titles by sending an inline onebox request with a categoryid parameter...

CVE-2026-32951

Discourse suffers an authorization bypass affecting access to shared draft topic titles via an inline onebox request. Affected versions: 2026.1.0-latest to before 2026.1.3; 2026.2.0-latest to before 2026.2.2; and 2026.3.0-latest to before 2026.3.0. An authenticated user can obtain shared draft ti...

CVE-2026-32951 Discourse: Authorization bypass in oneboxer via user-controlled category id

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, an authenticated user can obtain shared draft topic titles by sending an inline onebox request with a categoryid parameter...

CVE-2026-32951 Discourse: Authorization bypass in oneboxer via user-controlled category id

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, an authenticated user can obtain shared draft topic titles by sending an inline onebox request with a categoryid parameter...

CVE-2026-32951

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, an authenticated user can obtain shared draft topic titles by sending an inline onebox request with a categoryid parameter...

EUVD-2026-17559

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, non-staff users could access read receipt information for staff-only posts they weren't supposed to see. No post content w...

CVE-2026-32620

Summary: CVE-2026-32620 affects Discourse. From 2026.1.0-latest up to before 2026.1.3, 2026.2.0-latest up to before 2026.2.2, and 2026.3.0-latest up to before 2026.3.0, non-staff users could access read receipt metadata for staff-only posts they were not supposed to see. No post content was expos...

CVE-2026-32620 Discourse: Missing post-level authorization allows whisper metadata disclosure

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, non-staff users could access read receipt information for staff-only posts they weren't supposed to see. No post content w...

CVE-2026-32620 Discourse: Missing post-level authorization allows whisper metadata disclosure

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, non-staff users could access read receipt information for staff-only posts they weren't supposed to see. No post content w...

CVE-2026-32618 Discourse: Unauthorized channel membership inference via excluded_memberships_channel_id

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, there is possible channel membership inference from chat user search without authorization. This issue has been patched in...

CVE-2026-32618 Discourse: Unauthorized channel membership inference via excluded_memberships_channel_id

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, there is possible channel membership inference from chat user search without authorization. This issue has been patched in...

CVE-2026-32618

Discourse (open-source discussion platform) has a channel membership inference vulnerability affecting versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, where chat user search could reveal channel membership without authorizat...

CVE-2026-32619 Discourse: Insufficient topic visibility check allows unauthorized poll manipulation in private categories

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, users who lost access to a topic e.g., removed from a private category group could still interact with polls in that topic...

CVE-2026-32619 Discourse: Insufficient topic visibility check allows unauthorized poll manipulation in private categories

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, users who lost access to a topic e.g., removed from a private category group could still interact with polls in that topic...

CVE-2026-32619 Discourse: Insufficient topic visibility check allows unauthorized poll manipulation in private categories

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, users who lost access to a topic e.g., removed from a private category group could still interact with polls in that topic...

CVE-2026-32619

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, users who lost access to a topic e.g., removed from a private category group could still interact with polls in that topic...

CVE-2026-32618

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, there is possible channel membership inference from chat user search without authorization. This issue has been patched in...

EUVD-2026-17555

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, there is possible channel membership inference from chat user search without authorization. This issue has been patched in...

CVE-2026-32619

Discourse vulnerability CVE-2026-32619 affects the poll feature when a user loses access to a topic in private categories. Versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0 allow such users to interact with polls (vote and togg...

CVE-2026-32618 Discourse: Unauthorized channel membership inference via excluded_memberships_channel_id

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, there is possible channel membership inference from chat user search without authorization. This issue has been patched in...