CVE-2026-41273HIGH 8.2EPSS p22.3%

CVE-2026-41273CVE-2026-41273

Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, Flowise contains an authentication bypass vulnerability that allows an unauthenticated attacker to obtain OAuth 2.0 access tokens associated with a public chatflow. By accessing a public chatflow configuration endpoint, an attacker can retrieve internal workflow data, including OAuth credential identifiers, which can then be used to refresh and obtain valid OAuth 2.0 access tokens without authentication. This vulnerability is fixed in 3.1.0.

Scoring

CVSS 3.18.2 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
EPSS0.31% probability of exploitation · percentile 22.3% · 2026-06-19T12:03:05Z
Published2026-04-23
Last modified2026-04-24

Underlying weaknesses· 1

CWE-306

References

  1. https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-6f7g-v4pp-r667
  2. https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-6f7g-v4pp-r667

1

TypeTargetConfidenceTier
WeaknessMissing Authentication for Critical Functioncwe-3060%live

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