CVE-2026-33053

High

Description

Langflow is a tool for building and deploying AI-powered agents and workflows. In versions prior to 1.9.0, the delete_api_key_route() endpoint accepts an api_key_id path parameter and deletes it with only a generic authentication check (get_current_active_user dependency). However, the delete_api_key() CRUD function does NOT verify that the API key belongs to the current user before deletion.

SeverityHigh

CVSS8.8

Exploit probability—

Product

Langflow

PublishedMar 20, 2026

First seenMar 20, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Update

langflow langflow1.9.0 or later
langflow1.9.0 or later

Affected products

Product	Affected versions	Fixed in
langflow langflow	v < 1.9.0	1.9.0
langflowPyPI	v < 1.9.0	1.9.0

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