CVE-2026-42277 (GCVE-0-2026-42277)
Vulnerability from cvelistv5 – Published: 2026-05-08 03:51 – Updated: 2026-05-08 21:28
VLAI
EPSS
VEX
Title
Onyx: IDOR in /chat/file/{file_id} allows any authenticated user to download other users files
Summary
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.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-08 14:29 UTC
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/onyx-dot-app/onyx/security/adv… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| onyx-dot-app | onyx |
Affected:
< 3.0.9
Affected: >= 3.1.0, < 3.1.6 Affected: >= 3.2.0, < 3.2.6 |
guessed |
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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