CVE-2026-91156

Discourse is an open-source discussion platform. Prior to 2026.9.0, 2026.8.1, 2026.7.3, and 2026.1.9, MessageBus audience calculation could deliver messages from a read-restricted category chat channel to an authenticated user who could view the category but was not allowed to use Chat under the...

CVE-2026-91156

The Discourse open-source discussion platform is vulnerable to an authorization bypass in the MessageBus audience calculation. Prior to versions 2026.9.0, 2026.8.1, 2026.7.3, and 2026.1.9 , the system failed to enforce Chat eligibility, allowing authenticated users who could view a category but w...

CVE-2026-91156 Discourse: Chat MessageBus delivers read-restricted messages to unauthorized users

Discourse is an open-source discussion platform. Prior to 2026.9.0, 2026.8.1, 2026.7.3, and 2026.1.9, MessageBus audience calculation could deliver messages from a read-restricted category chat channel to an authenticated user who could view the category but was not allowed to use Chat under the...

CVE-2026-91156 Discourse: Chat MessageBus delivers read-restricted messages to unauthorized users

Discourse is an open-source discussion platform. Prior to 2026.9.0, 2026.8.1, 2026.7.3, and 2026.1.9, MessageBus audience calculation could deliver messages from a read-restricted category chat channel to an authenticated user who could view the category but was not allowed to use Chat under the...

EUVD-2026-101300

Discourse is an open-source discussion platform. Prior to 2026.9.0, 2026.8.1, 2026.7.3, and 2026.1.9, MessageBus audience calculation could deliver messages from a read-restricted category chat channel to an authenticated user who could view the category but was not allowed to use Chat under the...

BIT-DISCOURSE-2026-44786 Discourse: Public chat MessageBus broadcasts are not restricted to chat-eligible users

Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.4, 2026.3.0 to before 2026.3.1, and 2026.4.0 to before 2026.4.1, chat events for public category channels are published to MessageBus without permission scoping, so any MessageBus subscriber without chat...

CVE-2026-44786 Discourse: Public chat MessageBus broadcasts are not restricted to chat-eligible users

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, chat events for public category channels are published to MessageBus without permission scoping, so any MessageBus...

CVE-2026-44786 Discourse: Public chat MessageBus broadcasts are not restricted to chat-eligible users

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, chat events for public category channels are published to MessageBus without permission scoping, so any MessageBus...

CVE-2026-44786 Discourse: Public chat MessageBus broadcasts are not restricted to chat-eligible users

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, chat events for public category channels are published to MessageBus without permission scoping, so any MessageBus...

CVE-2026-44786: Exposure of Sensitive Information to an Unauthorized Actor

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, chat events for public category channels are published to MessageBus without permission scoping, so any MessageBus...

PT-2026-48983

Name of the Vulnerable Software and Affected Versions Discourse versions 2026.1.0 through 2026.1.3 Discourse versions 2026.3.0 Discourse versions 2026.4.0 Description Chat events for public category channels are published to the MessageBus without permission scoping. This allows any MessageBus...

CVE-2021-35975

Absolute path traversal vulnerability in the Systematica SMTP Adapter component up to v2.0.1.101 in Systematica Radius up to v.3.9.256.777 allows remote attackers to read arbitrary files via a full pathname in GET parameter "file" in URL. Also: affected components in same product - HTTP Adapter u...

CVE-2021-35975

Absolute path traversal vulnerability in the Systematica SMTP Adapter component up to v2.0.1.101 in Systematica Radius up to v.3.9.256.777 allows remote attackers to read arbitrary files via a full pathname in GET parameter "file" in URL. Also: affected components in same product - HTTP Adapter u...

Path traversal

Absolute path traversal vulnerability in the Systematica SMTP Adapter component up to v2.0.1.101 in Systematica Radius up to v.3.9.256.777 allows remote attackers to read arbitrary files via a full pathname in GET parameter "file" in URL. Also: affected components in same product - HTTP Adapter u...

CVE-2021-35975

Absolute path traversal vulnerability in the Systematica SMTP Adapter component up to v2.0.1.101 in Systematica Radius up to v.3.9.256.777 allows remote attackers to read arbitrary files via a full pathname in GET parameter "file" in URL. Also: affected components in same product - HTTP Adapter u...

PT-2023-12264

Name of the Vulnerable Software and Affected Versions Systematica Radius versions up to 3.9.256.777 Systematica SMTP Adapter component versions up to 2.0.1.101 HTTP Adapter versions up to 1.8.0.15 MSSQL MessageBus Proxy versions up to 1.1.06 Financial Calculator versions up to 1.3.05 FIX Adapter...

CVE-2021-35975

CVE-2021-35975 describes an absolute path traversal in Systematica Radius components (Systematica SMTP Adapter up to v2.0.1.101; Radius up to v3.9.256.777) allowing remote attackers to read arbitrary files via a full pathname in the GET parameter file. Related affected components in the same prod...

BIT-2023-45131

Discourse is an open source platform for community discussion. New chat messages can be read by making an unauthenticated POST request to MessageBus. This issue is patched in the 3.1.1 stable and 3.2.0.beta2 versions of Discourse. Users are advised to upgrade. There are no known workarounds for...

Design/Logic Flaw

Discourse is an open source platform for community discussion. New chat messages can be read by making an unauthenticated POST request to MessageBus. This issue is patched in the 3.1.1 stable and 3.2.0.beta2 versions of Discourse. Users are advised to upgrade. There are no known workarounds for...

CVE-2023-45131 Unauthenticated access to new private chat messages in Discourse

Discourse is an open source platform for community discussion. New chat messages can be read by making an unauthenticated POST request to MessageBus. This issue is patched in the 3.1.1 stable and 3.2.0.beta2 versions of Discourse. Users are advised to upgrade. There are no known workarounds for...