CVE-2026-46476: Flowise: CustomTemplate create+update mass-assignment allows cross-workspace template takeover

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-08 · updated 2026-07-23
Weakness: CWE-915

Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, CustomTemplate create and update mass-assignment allows cross-workspace template takeover. This issue has been patched in version 3.1.2.

Affected products

FlowiseAI Flowise: before 3.1.2 — fixed in 3.1.2

How to fix

Upgrade to a fixed version: FlowiseAI Flowise 3.1.2. Check the vendor advisory for mitigations.

References

https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.2
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-728h-4mwj-f2p4

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