CVE-2026-91933CWE-639

CVE-2026-91933

High · published September 15, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
27.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
CVSS v4.0
7.6 · CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
EPSS
0.00352 · 27.6th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-09-15T20:17Z
References (2)
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-gggp-6qmf-xwwc · [email protected]https://www.vulncheck.com/advisories/flowise-before-3.1.4-authorization-bypass-via-openai-realtime · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 15 SEP 15:17Z
    Flowise before 3.1.4 Authorization Bypass via openai-realtime
    cvelistv5