May 5, 2025 · Applied Cybernetics Group
CVE-2025-3248 — Langflow Langflow
Langflow Missing Authentication Vulnerability
- Added to KEV
2025-05-05- Federal due date
2025-05-26- Vendor
- Langflow
- Product
- Langflow
- EPSS
- 99.8th percentile (score 0.929, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2025-3248
CISA short 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.