CVE-2025-3248 Known ransomware use

Langflow Missing Authentication Vulnerability

Langflow — Langflow

Added to KEV catalog: 5 May 2025
Federal remediation due date: 26 May 2025
Weakness classification (CWE): CWE-306

CISA Description

Langflow contains a missing authentication vulnerability in the /api/v1/validate/code endpoint that allows a remote, unauthenticated attacker to execute arbitrary code via crafted HTTP requests.

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes

This vulnerability affects a common open-source project, third-party library, or a protocol used by different products. For more information, please see: https://github.com/advisories/GHSA-c995-4fw3-j39m ; https://nvd.nist.gov/vuln/detail/CVE-2025-3248

View on NVD View on MITRE CVE View full CISA catalog

More Langflow Vulnerabilities

CVE-2026-55255

Langflow Authorization Bypass Through User-Controlled Key Vulnerability

CVE-2025-34291

Langflow Origin Validation Error Vulnerability

CVE-2026-33017

Langflow Code Injection Vulnerability

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