Eval Injection Affecting lfx package, versions [,1.12.0)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-LFX-21693632
- published24 Oct 2026
- disclosed28 Sept 2026
- creditUnknown
Introduced: 28 Sep 2026
NewCVE-2026-101861 (opens in a new tab)How to fix?
Upgrade lfx to version 1.12.0 or higher.
Overview
lfx is a lfx is a command-line tool for running Langflow workflows. It provides two main commands: serve and run.
Affected versions of this package are vulnerable to Eval Injection via eval() calls in create_input_schema() and create_input_schema_from_dict() in schema.py, which construct Literal types from user-provided dropdown options using f-string interpolation. An attacker who can upload or control component templates can inject arbitrary Python code through malicious option values, achieving code execution on the server.