External Control of File Name or Path Affecting langflow-base package, versions [0.2.0,0.8.0rc0)
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-LANGFLOWBASE-15702032
- published20 Mar 2026
- disclosed19 Mar 2026
- creditAkshat Sinha
Introduced: 19 Mar 2026
CVE-2026-33309 (opens in a new tab)How to fix?
Upgrade langflow-base to version 0.8.0rc0 or higher.
Overview
Affected versions of this package are vulnerable to External Control of File Name or Path in the POST /api/v2/files/ endpoint. An attacker can execute arbitrary code, overwrite critical files, or gain unauthorized access by uploading files with crafted filenames that bypass containment checks.