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Vulnerabilities CVE-2026-42277

CVE-2026-42277

Medium
Open
TLP:CLEAR

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

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Description

Onyx is an open-source AI platform. Prior to versions 3.0.9, 3.1.6, and 3.2.6, the GET /chat/file/{file_id} 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 belongs to them. An attacker who knows or obtains a file UUID can access confidential documents, chat attachments, and other files uploaded by any user in the system. This issue has been patched in versions 3.0.9, 3.1.6, and 3.2.6.

Details

CVSS Score
6.5
EPSS Score
0.20%

10.3th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Confidence
90%
Published
May 8, 2026
Last Modified
May 8, 2026
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