SecuriTricks - CVE-2026-42277

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.

Product(s) Impacted

Vendor	Product	Versions
Onyx	Onyx	<3.0.9, <3.1.6, <3.2.6

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-639

Authorization Bypass Through User-Controlled Key

The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	onyx	onyx	<3.0.9	/	/	/	/	/	/	/
a	onyx	onyx	<3.1.6	/	/	/	/	/	/	/
a	onyx	onyx	<3.2.6	/	/	/	/	/	/	/

References

https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-vg3h-35f7-7w6r

CVSS Score

6.5 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: LOW
Scope: UNCHANGED
Confidentiality Impact: HIGH
Integrity Impact: NONE
Availability Impact: NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

View Vector String

Timeline

Published: May 8, 2026, 5:16 a.m.
Last Modified: May 8, 2026, 10:16 p.m.

Status : Undergoing Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

CVE-2026-42277