CVE-2026-91933

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-15. a secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

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

Flowise before 3.1.4 fails to enforce workspace-level authorization checks in openai-realtime endpoints, allowing authenticated users to access tools from ChatFlows in other workspaces by supplying an unscoped chatflowid. Attackers can invoke GET and POST requests to retrieve tool definitions and execute tools from victim workspaces, triggering external side effects and accessing sensitive tool outputs.

CVSS v3
7.1
EG Score
7.1(high)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
26%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 17, 2026

Advisory Details (2)

Auto-updated Sep 15, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Flowise before 3.1.4 Authorization Bypass via openai-realtime | Advisories | VulnCheck

https://www.vulncheck.com/advisories/flowise-before-3.1.4-authorization-bypass-via-openai-realtime
github Patch Available🟡 PoC Available

openai-realtime endpoints allow cross-workspace tool disclosure and execution via unscoped chatflow ID · Advisory · FlowiseAI/Flowise · GitHub

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-gggp-6qmf-xwwc

Vendor Advisories for CVE-2026-91933(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 26× in last 7d / 26× 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 00:28 UTCEG score recompute
  2. 2026-09-21 00:28 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-20 11:50 UTCGHSA enrichment
  5. 2026-09-19 23:02 UTCEG score recompute
  6. 2026-09-19 23:02 UTCGHSA enrichment
  7. 2026-09-19 10:24 UTCGHSA enrichment
  8. 2026-09-18 21:45 UTCEG score recompute
  9. 2026-09-18 21:45 UTCGHSA enrichment
  10. 2026-09-18 19:28 UTCEPSS rescore
  11. 2026-09-18 09:07 UTCGHSA enrichment
  12. 2026-09-17 20:29 UTCEG score recompute
  13. 2026-09-17 20:29 UTCGHSA enrichment
  14. 2026-09-17 19:39 UTCEG score recompute
  15. 2026-09-17 19:39 UTCGHSA enrichment
  16. 2026-09-17 19:32 UTCEPSS rescore
  17. 2026-09-17 09:45 UTCGHSA enrichment
  18. 2026-09-16 21:07 UTCGHSA enrichment
  19. 2026-09-16 17:55 UTCEG score recompute
  20. 2026-09-16 17:55 UTCGHSA enrichment
  21. 2026-09-16 14:09 UTCEPSS rescore
  22. 2026-09-16 05:11 UTCEG score recompute
  23. 2026-09-16 05:11 UTCGHSA enrichment
  24. 2026-09-15 16:34 UTCEG score recompute
  25. 2026-09-15 15:24 UTCEG score recompute
Show 1 more
  1. 2026-09-15 15:22 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-91933?
CVE-2026-91933 is a high vulnerability published on September 15, 2026. Flowise before 3.1.4 fails to enforce workspace-level authorization checks in openai-realtime endpoints, allowing authenticated users to access tools from ChatFlows in other workspaces by supplying an unscoped chatflowid. Attackers can invoke GET and POST requests to retrieve tool definitions and…
When was CVE-2026-91933 disclosed?
CVE-2026-91933 was first published in the National Vulnerability Database on September 15, 2026, with the most recent update on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-91933 actively exploited?
CVE-2026-91933 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 73.9% of all scored CVEs.
What is the CVSS score of CVE-2026-91933?
CVE-2026-91933 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-91933?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-91933, 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

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