CVE-2026-33484

Langflow has Unauthenticated IDOR on Image Downloads

At a glance

Severity: HIGH 7.5
EPSS: EPSS 5.94 % · percentile 93 (2026-10-27)
State: PUBLISHED
Published: 2026-03-24
Updated: 2026-03-24
Assigner: GitHub_M
NVD status: Analyzed

Description

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	GitHub_M
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	NVD · security-advisories@github.com (Secondary)

Weaknesses (CWE)

Advisories

GHSA-7grx-3xcx-2xv5 — langflow has Unauthenticated IDOR on Image Downloads
PYSEC-2026-80 — 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}`

European references

ENISA EUVD · EUVD-2026-14876
GCVE · GCVE-0-2026-33484

Affected configurations (NVD CPE)

cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:* ≥ 1.0.0 < 1.9.0

Affected products

Product	Versions
langflow-ai · langflow	affected >= 1.0.0, < 1.9.0

References

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

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD