CVE-2025-3248
Langflow Missing Authentication Vulnerability
MITRE ATT&CK techniques
How this vulnerability maps to adversary behaviour, from the Center for Threat-Informed Defense's public CVE→ATT&CK mappings. Use it to check whether your detections already cover the technique.
Summary
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.
Affected software
Vendor: Langflow · Product: Langflow
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in Langflow
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2026-33017 | Langflow Code Injection Vulnerability | 99.8% | Yes |
| CVE-2025-34291 | Langflow Origin Validation Error Vulnerability | 83.6% | Yes |
| CVE-2026-0770 | Langflow Inclusion of Functionality from Untrusted Control Sphere Vulnerability | 53.5% | Yes |
| CVE-2026-55255 | Langflow Authorization Bypass Through User-Controlled Key Vulnerability | 29.1% | Yes |
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