Auth bypass in Flowiseai Flowise
CVE-2026-8027
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (36.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.002
Affected products
- Flowiseai Flowise — versions 3.0.0, 3.0.1, 3.0.2
Weakness classification (CWE)
References
- vuldb.com/vuln/361274 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/361274/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/submit/777657 (VDB Entry, Third Party Advisory, third-party-advisory)
- gist.github.com/YLChen-007/3584e6ffa0bba6367328ecf0b46b0e4b (related, Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-8027?
- CVE-2026-8027 is a medium-severity vulnerability in Flowiseai Flowise, classified under Improper Authorization. CVSS score: 4.3/10. Published 2026-05-06.
- How severe is CVE-2026-8027?
- Medium severity. CVSS v3 base score is 4.3 out of 10.