CVE-2026-71424

Onyx is an open-source AI platform. Prior to 3.1.10, 3.2.14, and 4.0.0, Onyx's GET /api/mcp/servers and GET /api/mcp/servers/persona/personaid endpoints expose another user's OAuth Authorization header because OnyxTokenStorage.settokens and OnyxTokenStorage.setclientinfo in...

CVE-2026-63178

Onyx is an open-source AI platform. Prior to 4.3.0, Onyx Enterprise Edition's PATCH /manage/admin/user-group/usergroupid and POST /manage/admin/user-group/usergroupid/add-users endpoints in ee/onyx/server/usergroup/api.py call updateusergroup and adduserstousergroup in ee/onyx/db/usergroup.py...

CVE-2026-63178 Onyx Curator-scope IDOR: any curator can modify membership of arbitrary user groups via unscoped PATCH /manage/admin/user-group/{id} and /add-users leading to cross-group document disclosure

Onyx is an open-source AI platform. Prior to 4.3.0, Onyx Enterprise Edition's PATCH /manage/admin/user-group/usergroupid and POST /manage/admin/user-group/usergroupid/add-users endpoints in ee/onyx/server/usergroup/api.py call updateusergroup and adduserstousergroup in ee/onyx/db/usergroup.py...

EUVD-2026-60497

Onyx is an open-source AI platform. Prior to 4.3.0, Onyx Enterprise Edition's PATCH /manage/admin/user-group/usergroupid and POST /manage/admin/user-group/usergroupid/add-users endpoints in ee/onyx/server/usergroup/api.py call updateusergroup and adduserstousergroup in ee/onyx/db/usergroup.py...

CVE-2026-63178

Onyx Enterprise Edition (open-source AI platform) is affected by a curator-scope IDOR in its user group management API. Prior to 4.3.0 , the PATCH /manage/admin/user-group/{user_group_id} and POST /manage/admin/user-group/{user_group_id}/add-users endpoints in ee/onyx/server/user_group/api.py inv...

CVE-2026-63178 Onyx Curator-scope IDOR: any curator can modify membership of arbitrary user groups via unscoped PATCH /manage/admin/user-group/{id} and /add-users leading to cross-group document disclosure

Onyx is an open-source AI platform. Prior to 4.3.0, Onyx Enterprise Edition's PATCH /manage/admin/user-group/usergroupid and POST /manage/admin/user-group/usergroupid/add-users endpoints in ee/onyx/server/usergroup/api.py call updateusergroup and adduserstousergroup in ee/onyx/db/usergroup.py...

CVE-2026-63178

Onyx is an open-source AI platform. Prior to 4.3.0, Onyx Enterprise Edition's PATCH /manage/admin/user-group/usergroupid and POST /manage/admin/user-group/usergroupid/add-users endpoints in ee/onyx/server/usergroup/api.py call updateusergroup and adduserstousergroup in ee/onyx/db/usergroup.py...

CVE-2026-71424 Onyx: Cross-user OAuth-token leak via /api/mcp/servers* for per-user MCP servers

Onyx is an open-source AI platform. Prior to 3.1.10, 3.2.14, and 4.0.0, Onyx's GET /api/mcp/servers and GET /api/mcp/servers/persona/personaid endpoints expose another user's OAuth Authorization header because OnyxTokenStorage.settokens and OnyxTokenStorage.setclientinfo in...

EUVD-2026-60479

Onyx is an open-source AI platform. Prior to 3.1.10, 3.2.14, and 4.0.0, Onyx's GET /api/mcp/servers and GET /api/mcp/servers/persona/personaid endpoints expose another user's OAuth Authorization header because OnyxTokenStorage.settokens and OnyxTokenStorage.setclientinfo in...

CVE-2026-71424

Onyx is an open-source AI platform. Prior to 3.1.10, 3.2.14, and 4.0.0, Onyx's GET /api/mcp/servers and GET /api/mcp/servers/persona/personaid endpoints expose another user's OAuth Authorization header because OnyxTokenStorage.settokens and OnyxTokenStorage.setclientinfo in...

CVE-2026-71424

CVE-2026-71424 is a critical cross-user OAuth token leak in Onyx , an open-source AI platform. The GET /api/mcp/servers and GET /api/mcp/servers/persona/{persona_id} endpoints expose another user's OAuth Authorization header. The root cause is that OnyxTokenStorage.set_tokens and OnyxTokenStorage...

CVE-2026-71424 Onyx: Cross-user OAuth-token leak via /api/mcp/servers* for per-user MCP servers

Onyx is an open-source AI platform. Prior to 3.1.10, 3.2.14, and 4.0.0, Onyx's GET /api/mcp/servers and GET /api/mcp/servers/persona/personaid endpoints expose another user's OAuth Authorization header because OnyxTokenStorage.settokens and OnyxTokenStorage.setclientinfo in...

PT-2026-76835

Onyx is an open-source AI platform. Prior to 4.3.0, Onyx Enterprise Edition's PATCH /manage/admin/user-group/user group id and POST /manage/admin/user-group/user group id/add-users endpoints in ee/onyx/server/user group/api.py call update user group and add users to user group in ee/onyx/db/user...

PT-2026-76866

Name of the Vulnerable Software and Affected Versions Onyx versions prior to 3.1.10 Onyx versions prior to 3.2.14 Onyx versions prior to 4.0.0 Description An issue exists where the 'GET /api/mcp/servers' and 'GET /api/mcp/servers/persona/persona id' endpoints expose the OAuth Authorization header...

CVE-2026-42276

Onyx is an open-source AI platform. Prior to versions 3.0.9, 3.1.6, and 3.2.6, the POST /chat/stop-chat-session/chatsessionid endpoint lets any authenticated user stop any other user's active chat session. The endpoint checks authentication but never verifies the session belongs to the caller. An...

CVE-2026-42276

Onyx is an open-source AI platform. Prior to versions 3.0.9, 3.1.6, and 3.2.6, the POST /chat/stop-chat-session/chatsessionid endpoint lets any authenticated user stop any other user's active chat session. The endpoint checks authentication but never verifies the session belongs to the caller. An...

CVE-2026-42277 Onyx: IDOR in /chat/file/{file_id} allows any authenticated user to download other users files

Onyx is an open-source AI platform. Prior to versions 3.0.9, 3.1.6, and 3.2.6, the GET /chat/file/fileid endpoint allows any authenticated user to download any other user's uploaded files by providing the file UUID. The endpoint verifies the caller is authenticated but never checks that the file...

CVE-2026-42277

Onyx is an open-source AI platform. Prior to versions 3.0.9, 3.1.6, and 3.2.6, the GET /chat/file/fileid endpoint allows any authenticated user to download any other user's uploaded files by providing the file UUID. The endpoint verifies the caller is authenticated but never checks that the file...

CVE-2026-42277

Onyx (open‑source AI platform) contains an IDOR in the GET /chat/file/{file_id} endpoint. Before versions 3.0.9, 3.1.6, and 3.2.6, any authenticated user could download another user’s uploaded files by supplying the file’s UUID, because authentication is checked but ownership is not. The vulnerab...

CVE-2026-42277 Onyx: IDOR in /chat/file/{file_id} allows any authenticated user to download other users files

Onyx is an open-source AI platform. Prior to versions 3.0.9, 3.1.6, and 3.2.6, the GET /chat/file/fileid endpoint allows any authenticated user to download any other user's uploaded files by providing the file UUID. The endpoint verifies the caller is authenticated but never checks that the file...