CVE-2026-41267CRITICAL 9.8EPSS p25.0%

CVE-2026-41267CVE-2026-41267

Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, an improper mass assignment (JSON injection) vulnerability in the account registration endpoint of Flowise Cloud allows unauthenticated attackers to inject server-managed fields and nested objects during account creation. This enables client-controlled manipulation of ownership metadata, timestamps, organization association, and role mappings, breaking trust boundaries in a multi-tenant environment. This vulnerability is fixed in 3.1.0.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.33% probability of exploitation · percentile 25.0% · 2026-06-19T12:03:05Z
Published2026-04-23
Last modified2026-04-24

Underlying weaknesses· 2

CWE-639CWE-915

References

  1. https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-48m6-ch88-55mj
  2. https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-48m6-ch88-55mj

2

TypeTargetConfidenceTier
WeaknessAuthorization Bypass Through User-Controlled Keycwe-6390%live
WeaknessImproperly Controlled Modification of Dynamically-Determined Object Attributescwe-9150%live

Related by meaning· 6

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.