Threats affecting pkg:github/onyx-dot-app/onyx

CVE-2026-116004 is a cross-site scripting (XSS) vulnerability in the onyx-dot-app Onyx product, specifically affecting version 5.0.0. The vulnerability exists in an unknown function within the file web/src/app/craft/components/output-panel/PreviewTab.tsx. The flaw allows remote attackers to execute XSS attacks. The vulnerability has been publicly disclosed, but the vendor has not responded or provided a fix. The CVSS 4.0 score rates this as a medium severity issue.

Onyx Enterprise Edition versions prior to 4.3.0 contain an authorization bypass vulnerability in specific user group management endpoints. This flaw allows a curator to add accounts to arbitrary user groups without proper validation, potentially granting unauthorized document access. The issue is resolved in version 4.3.0.

Onyx versions prior to 3.1.10, 3.2.14, and 4.0.0 contain a vulnerability where certain API endpoints expose another user's OAuth Authorization header to unauthorized BASIC_ACCESS users. This occurs due to per-user tokens being copied into a shared admin configuration and then returned in API responses. The issue has been fixed in versions 3.1.10, 3.2.14, and 4.0.0.

CVE-2026-42277 is an authorization bypass vulnerability in the onyx open-source AI platform. Before fixed versions 3.0.9, 3.1.6, and 3.2.6, authenticated users could download files uploaded by other users by supplying the file UUID to the GET /chat/file/{file_id} endpoint. The endpoint verified authentication but did not verify file ownership, allowing unauthorized access to confidential files. This vulnerability has been patched in the specified versions.

CVE-2026-42276 is an authorization bypass vulnerability in the onyx open-source AI platform affecting versions prior to 3.0.9, 3.1.6, and 3.2.6. The POST /chat/stop-chat-session/{chat_session_id} endpoint allows any authenticated user to stop another user's active chat session without verifying ownership of the session. This enables an attacker who knows a chat session UUID to interrupt another user's LLM generation mid-stream. The vulnerability has been patched in versions 3.

Authorization bypass in update_user_group in onyx-dot-app Onyx Enterprise Edition 0.27.0 allows remote authenticated attackers to modify arbitrary user groups via crafted PATCH requests to the /api/manage/admin/user-group/id endpoint, bypassing intended curator-group assignment checks.