ACTIVELY EXPLOITED
CVE-2025-3248: Langflow Missing Authentication Vulnerability
| Vendor | Langflow |
|---|---|
| Product | Langflow |
| Actively exploited | Yes |
| Added to CISA KEV | 5 May 2025 |
| CISA federal deadline | 26 May 2025 |
| Ransomware use | Known |
| Weakness (CWE) | CWE-306 |
Required action (CISA's text)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Description (NVD)
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.
SOURCES
Other Langflow flaws
- CVE-2026-0770: Langflow Inclusion of Functionality from Untrusted Control Sphere Vulnerability
- 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
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.