Is CVE-2026-33484 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-33484 being exploited in the wild.

How severe is CVE-2026-33484?

High severity, with a CVSS score of 7.5, published 20 March 2026.

Which products and versions are affected?

langflow (PyPI) ECOSYSTEM:introduced=1.0.0,fixed=1.9.0.

Is there a fix for CVE-2026-33484?

Yes. langflow (PyPI): upgrade to 1.9.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-33484 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-33484?

Check whether you run langflow (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-33484: Langflow unauthenticated IDOR in image download endpoint

CVE-2026-33484 · Severity: high · CVSS 7.5 · Published 2026-03-20

Langflow, a tool for building multi-agent AI applications, contains a security flaw in how it handles image downloads. An unauthorized person can download images uploaded by other users if they know or can guess the specific ID of a workflow. This could lead to the exposure of sensitive data or private images across different user accounts in shared environments.

Technologies: langflow (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2026-33484 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-33484 being exploited in the wild.
How severe is CVE-2026-33484?: High severity, with a CVSS score of 7.5, published 20 March 2026.
Which products and versions are affected?: langflow (PyPI) ECOSYSTEM:introduced=1.0.0,fixed=1.9.0.
Is there a fix for CVE-2026-33484?: Yes. langflow (PyPI): upgrade to 1.9.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-33484 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-33484?: Check whether you run langflow (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

langflow (PyPI): upgrade to 1.9.0 or later
```
pip install "langflow>=1.9.0"
```

Technical details

The `/api/v1/files/images/{flow_id}/{file_name}` endpoint in Langflow fails to implement authentication or ownership checks. While other file-related endpoints use the `Depends(get_flow)` dependency to enforce access control, the `download_image` function in `src/backend/base/langflow/api/v1/files.py` lacks this protection. An unauthenticated attacker can exploit this Insecure Direct Object Reference (IDOR) vulnerability by sending a GET request with a valid `flow_id` (UUID) and `file_name` to retrieve images. This is particularly critical in multi-tenant deployments where UUIDs might be leaked through other API responses. The issue is resolved in version 1.9.0.

Affected products

langflow-ai langflow >= 1.0.0, < 1.9.0

Identifiers

CVE-2026-33484
GHSA-7grx-3xcx-2xv5
PYSEC-2026-80

Timeline

2026-03-20: disclosed
2026-03-20: advisory
2026-03-20: patched: Fixed in version 1.9.0

References

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