CVE-2026-41277: Flowise Mass Assignment Leads to Cross-Workspace Object Takeover

# CVE-2026-41277: Flowise Mass Assignment Leads to Cross-Workspace Object Takeover

https://gcdradar.vercel.app/incidents/cve-2026-41277-flowise-mass-assignment-leads-to-cross-worksp · AIR-2026-0587 · closed 2026-04-17

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-04-17
- AI role: Attack on AI
- Products: Flowise
- CVE ids: CVE-2026-41277
- CVSS: 8.8

## Summary

A mass assignment flaw in Flowise allows authenticated users to manipulate primary keys during document store creation, leading to unauthorized object modification. Users are advised to update to the patched version.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-04-23: CVE-2026-41277: Flowise is a drag & drop user interface to build a customized large language model flow. (https://nvd.nist.gov/vuln/detail/CVE-2026-41277)
- 2026-04-17: CVE-2026-41277: Flowise: Mass Assignment in DocumentStore Create Endpoint Leads to Cross-Workspace Object Takeover (IDOR) (https://github.com/advisories/GHSA-3prp-9gf7-4rxx)

## Sources

- 2026-04-17 GitHub Advisory Database: CVE-2026-41277: Flowise: Mass Assignment in DocumentStore Create Endpoint Leads to Cross-Workspace Object Takeover (IDOR) https://github.com/advisories/GHSA-3prp-9gf7-4rxx
- 2026-04-23 NVD: CVE-2026-41277: Flowise is a drag & drop user interface to build a customized large language model flow. https://nvd.nist.gov/vuln/detail/CVE-2026-41277

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.