High severity · published Sep 15, 2026
CVE-2026-91933
Flowise before 3.1.4 Authorization Bypass via openai-realtime
7.1
CVSS
0.4%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FL
Flowise · FlowiseAI
before 3.1.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-91933
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-91933
github.com
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-gggp-6qmf-xwwc
www.vulncheck.com
https://www.vulncheck.com/advisories/flowise-before-3.1.4-authorization-bypass-via-openai-realtime
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