CVE-2026-30822: Flowise: Mass Assignment in `/api/v1/leads` Endpoint

Severity: high (CVSS 7.7 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 13.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-03-07 · updated 2026-06-17
Weakness: CWE-915

Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.0.13, unauthenticated users can inject arbitrary values into internal database fields when creating leads. This issue has been patched in version 3.0.13.

Affected products

FlowiseAI Flowise: before 3.0.13 — fixed in 3.0.13

How to fix

Upgrade to a fixed version: FlowiseAI Flowise 3.0.13. Check the vendor advisory for mitigations.

References

https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.0.13
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-mq4r-h2gh-qv7x

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