Medium severity · published May 6, 2026
CVE-2026-8027
FlowiseAI Flowise User Controller authorization
4.3
CVSS
0.3%
EPSS
No
On KEV
Description
A weakness has been identified in FlowiseAI Flowise up to 3.0.12. Affected by this vulnerability is an unknown functionality of the component User Controller Handler. This manipulation of the argument userId/organizationId/workspaceId/email causes authorization bypass. The attack may be initiated remotely. The affected component should be upgraded.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FL
Flowise · FlowiseAI
3.0.0; 3.0.1; 3.0.2; 3.0.3; 3.0.4; 3.0.5; +7 more · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-8027
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-8027
Exploit
https://gist.github.com/YLChen-007/3584e6ffa0bba6367328ecf0b46b0e4b
Third Party Advisory
https://vuldb.com/submit/777657
Third Party Advisory
https://vuldb.com/vuln/361274
Permissions Required
https://vuldb.com/vuln/361274/cti
More from Flowise
10.0
CVE-2026-70478
Flowise: Unauthenticated OAuth2 token refresh endpoint returns access tokens — enables token theft for any connected service
10.0
CVE-2025-59528
Flowise has Remote Code Execution vulnerability
9.9
CVE-2026-73602
Flowise before 3.1.3 Sandbox Escape to RCE
9.9
CVE-2026-67622
Flowise 3.1.4 IDOR in OpenAI Assistants Integration
9.9
CVE-2026-56274
Flowise - Remote Code Execution via MCP Security Bypass in validateCommandFlags and validateArgsForLocalFileAccess