CVE-2026-33484

EUVD-2026-14876

24.03.2026, 14:16

Langflow is a tool for building and deploying AI-powered agents and workflows. In versions 1.0.0 through 1.8.1, the `/api/v1/files/images/{flow_id}/{file_name}` endpoint serves image files without any authentication or ownership check. Any unauthenticated request with a known flow_id and file_name returns the image with HTTP 200. In a multi-tenant deployment, any attacker who can discover or guess a `flow_id` (UUIDs can be leaked through other API responses) can download any user's uploaded images without credentials. Version 1.9.0 contains a patch.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub_M	CNA	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Affected Products (NVD)

Vendor	Product	Version
langflow	langflow	1.0.0 ≤ 𝑥 < 1.9.0

𝑥

= Vulnerable software versions

Known Exploits!

Common Weakness Enumeration

CWE-284 - Improper Access Control
The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Vulnerability Media Exposure

[GERMAN] Jetzt patchen! Schadcode-Attacken auf KI-Tool Langflow beobachtet
Eine kritische Sicherheitslücke in Langflow dient Angreifern dazu, Schadcode auf PCs zu schieben und auszuführen. Ein Sicherheitspatch ist verfügbar.
Published: 2026-03-27T08:01:00+00:00

References

https://github.com/langflow-ai/langflow/security/advisories/GHSA-7grx-3xcx-2xv5