Vulnerability record · CVE-2026-33484 · published 24 March 2026

CVE-2026-33484: Langflow improper access control vulnerability

Langflow · Langflow

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.

7.5 CVSS 3.1 High EPSS 0.56% · top 55.7% CWE-284 · Improper access controlCWE-639 · Insecure direct object reference

7.5CVSS 3.1 base score

0.56%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

2References, 2 tagged exploit

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Langflow Langflow

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-33484), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.