CVE-2026-85693

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreHIGH confidence

Score 6.5 from GitHub Security Advisory (severity: HIGH) published 2026-09-04. a secondary CVSS source baseline 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.5
EG Score
6.5(high)
EG Risk
29(Track)
EG Risk 29/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 14, 2026

Advisory Details (4)

Auto-updated Sep 4, 2026
No patch confirmed yet.
generic

Chatbot UI Cross-User Private File Content Disclosure via Retrieval API | Advisories | VulnCheck

https://www.vulncheck.com/advisories/chatbot-ui-cross-user-private-file-content-disclosure-via-retrieval-api
generic

chatbot-ui/app/api/retrieval/retrieve/route.ts at 81328b61d2a4ab597a7a057be70e785cf756d9f8 · mckaywrigley/chatbot-ui · GitHub

https://github.com/mckaywrigley/chatbot-ui/blob/81328b61d2a4ab597a7a057be70e785cf756d9f8/app/api/retrieval/retrieve/route.ts
generic

GitHub - mckaywrigley/chatbot-ui: AI chat for any model. · GitHub

https://github.com/mckaywrigley/chatbot-ui
generic

Cross-user private file-content disclosure via unvalidated fileIds in the retrieval API (Supabase RLS bypass) · Issue #2028 · mckaywrigley/chatbot-ui · GitHub

https://github.com/mckaywrigley/chatbot-ui/issues/2028

Vendor Advisories for CVE-2026-85693(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 23× in last 7d / 48× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-21 00:42 UTCEG score recompute
  2. 2026-09-21 00:42 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 00:00 UTCEG score recompute
  5. 2026-09-20 00:00 UTCGHSA enrichment
  6. 2026-09-18 23:18 UTCEG score recompute
  7. 2026-09-18 23:18 UTCGHSA enrichment
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-17 22:37 UTCEG score recompute
  10. 2026-09-17 22:36 UTCGHSA enrichment
  11. 2026-09-17 19:32 UTCEPSS rescore
  12. 2026-09-16 21:50 UTCEG score recompute
  13. 2026-09-16 21:50 UTCGHSA enrichment
  14. 2026-09-16 14:09 UTCEPSS rescore
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-15 21:08 UTCEG score recompute
  17. 2026-09-15 21:08 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-14 20:27 UTCEG score recompute
  21. 2026-09-14 20:27 UTCGHSA enrichment
  22. 2026-09-14 19:40 UTCEG score recompute
  23. 2026-09-14 19:40 UTCGHSA enrichment
  24. 2026-09-14 02:33 UTCEG score recompute
  25. 2026-09-14 02:33 UTCGHSA enrichment
Show 23 more
  1. 2026-09-13 01:52 UTCEG score recompute
  2. 2026-09-13 01:52 UTCGHSA enrichment
  3. 2026-09-12 01:10 UTCEG score recompute
  4. 2026-09-12 01:10 UTCGHSA enrichment
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-11 00:28 UTCEG score recompute
  8. 2026-09-11 00:28 UTCGHSA enrichment
  9. 2026-09-09 23:46 UTCGHSA enrichment
  10. 2026-09-08 23:04 UTCEG score recompute
  11. 2026-09-08 23:04 UTCGHSA enrichment
  12. 2026-09-08 22:01 UTCEPSS rescore
  13. 2026-09-07 17:28 UTCEG score recompute
  14. 2026-09-07 17:28 UTCGHSA enrichment
  15. 2026-09-06 16:47 UTCEG score recompute
  16. 2026-09-06 16:47 UTCGHSA enrichment
  17. 2026-09-06 13:48 UTCEPSS rescore
  18. 2026-09-05 16:05 UTCEG score recompute
  19. 2026-09-05 16:05 UTCGHSA enrichment
  20. 2026-09-05 15:31 UTCEPSS rescore
  21. 2026-09-04 15:22 UTCEG score recompute
  22. 2026-09-04 14:45 UTCEG score recompute
  23. 2026-09-04 14:44 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-85693?
CVE-2026-85693 is a medium vulnerability published on September 4, 2026. 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…
When was CVE-2026-85693 disclosed?
CVE-2026-85693 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85693 actively exploited?
CVE-2026-85693 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 83.3% of all scored CVEs.
What is the CVSS score of CVE-2026-85693?
CVE-2026-85693 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-85693?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85693, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-85693

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