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UNKNOWN CISA KEV

CVE-2026-33017

CVSS v3

—

Unknown

EPSS Score

0.5 %

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Description

Langflow is a tool for building and deploying AI-powered agents and workflows. In versions prior to 1.9.0, the POST /api/v1/build_public_tmp/{flow_id}/flow endpoint allows building public flows without requiring authentication. When the optional data parameter is supplied, the endpoint uses attacker-controlled flow data (containing arbitrary Python code in node definitions) instead of the stored flow data from the database. This code is passed to exec() with zero sandboxing, resulting in unauthe

CISA Known Exploited Vulnerability

Date Added
2026-03-25
Patch Due Date
2026-04-08
Ransomware Use
Unknown

Technical details

Published
2026-03-20
Exploit-DB
EDB-52627

Frequently asked questions

What is CVE-2026-33017?

Langflow is a tool for building and deploying AI-powered agents and workflows. In versions prior to 1.9.0, the POST /api/v1/build_public_tmp/{flow_id}/flow endpoint allows building public flows without requiring authentication. When the optional data parameter is supplied, the endpoint uses attacker-controlled flow data (containing arbitrary Python code in node definitions) instead of the stored flow data from the database. This code is passed to exec() with zero sandboxing, resulting in unauthe

Is CVE-2026-33017 actively exploited?

Yes. CVE-2026-33017 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-04-08.

What is the CVSS score for CVE-2026-33017?

A CVSS score has not been assigned to CVE-2026-33017 yet.

Is CVE-2026-33017 affecting your environment?

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