High severity · published Sep 15, 2026
CVE-2026-91929
Flowise before 3.1.4 Cross-Tenant Authorization Bypass
7.1
CVSS
0.4%
EPSS
No
On KEV
Description
Flowise versions before 3.1.4 contain cross-tenant authorization gaps in Enterprise endpoints that fail to verify resource ownership before operations. Attackers with Enterprise access can delete arbitrary workspaces, invite themselves into other organizations, modify cross-org roles, and abuse stored SSO secrets.
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-2026-91929
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-91929
github.com
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-7x8x-vv46-4579
www.vulncheck.com
https://www.vulncheck.com/advisories/flowise-before-3.1.4-cross-tenant-authorization-bypass
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