May 5, 2025 · Applied Cybernetics Group
CVE-2025-3248 — Langflow Langflow
known ransomware use
Langflow Missing Authentication Vulnerability
- Added to KEV
2025-05-05- Federal due date
2025-05-26- Vendor
- Langflow
- Product
- Langflow
- EPSS
- 100.0th percentile (score 1.000, as of
2026-07-13) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- ATT&CK
- T1059 , T1203 · signal rollup
- 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.