Langflow · Langflow
CVE-2026-33017
Langflow has Unauthenticated Remote Code Execution via Public Flow Build Endpoint
O que é
Langflow is a tool for building and deploying AI-powered agents and workflows. In versions prior to 1.9.0, the POST /api/v1/build_public_tmp/{flow_id}/flow endpoint allows building public flows without requiring authentication. When the optional data parameter is supplied, the endpoint uses attacker-controlled flow data (containing arbitrary Python code in node definitions) instead of the stored flow data from the database. This code is passed to exec() with zero sandboxing, resulting in unauthenticated remote code execution. This is distinct from CVE-2025-3248, which fixed /api/v1/validate/code by adding authentication. The build_public_tmp endpoint is designed to be unauthenticated (for public flows) but incorrectly accepts attacker-supplied flow data containing arbitrary executable code. This issue has been fixed in version 1.9.0.
CISA: Langflow contains a code injection vulnerability that could allow building public flows without requiring authentication.
O que fazer
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Prazo para as agências federais dos EUA: 8 de abril de 2026
Mais falhas exploradas de Langflow
| Adicionado | Vulnerabilidade | Produto | Gravidade | Chance de ataque |
|---|---|---|---|---|
| 21 de jul. de 2026 | Inclusion of Functionality from Untrusted Control Sphere | Langflow | Crítica 9,8 | 63% |
| 7 de jul. de 2026 | Authorization Bypass Through User-Controlled Key | Langflow | Alto 8,4 | 0,9% |
| 21 de mai. de 2026 | Origin Validation Error | Langflow | Crítica 9,4 | 93% |
| 5 de mai. de 2025 | Missing Authentication | Langflow | Crítica 9,8 | >99,9% |
Fontes: Known Exploited Vulnerabilities (CISA, domínio público), CVE records (cve.org) e EPSS (FIRST). A chance de ataque é a estimativa EPSS de que alguém tente explorar a falha nos próximos 30 dias.