HIGH
Chatbot UI Cross-User Private File Content Disclosure via Retrieval API
Published Sep 4, 2026
7.1
HIGHCVSS 4.0
EPSS 0.44%
Description
Chatbot UI contains an authorization bypass vulnerability in the retrieval endpoint that allows authenticated attackers to access private file content belonging to other users by supplying arbitrary file UUIDs. The endpoint uses a service-role Supabase client that bypasses row-level security and fails to validate file ownership, enabling attackers to retrieve indexed content chunks from victim files through crafted POST requests.
Affected products
-
- Version 0StatusaffectedConstraints
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Mckaywrigley | Chatbot-UI | unaffected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Weaknesses (1)
References (5)
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-71142 Advisory
- https://github.com/mckaywrigley/chatbot-ui product
- https://github.com/mckaywrigley/chatbot-ui/blob/81328b61d2a4ab597a7a057be70e785cf756d9f8/app/api/retrieval/retrieve/route.ts technical-description
- https://github.com/mckaywrigley/chatbot-ui/issues/2028 issue-tracking
- https://www.vulncheck.com/advisories/chatbot-ui-cross-user-private-file-content-disclosure-via-retrieval-api third-party-advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner VulnCheck
Published Sep 4, 2026
Updated Sep 14, 2026
Reserved Sep 4, 2026
Link CVE-2026-85693
CISA Vulnrichment
Updated Sep 14, 2026
ENISA EUVD
EUVD-2026-71142 Assigner VulnCheck
Published Sep 4, 2026
Updated Sep 14, 2026
Exploited since n/a
Link EUVD-2026-71142