CVE-2026-33017Langflow has Unauthenticated Remote Code Execution via Public Flow Build Endpoint
Aktif olarak istismar ediliyor — Langflow Code Injection Vulnerability
CISA bu açığın gerçek saldırılarda kullanıldığını 25.03.2026 tarihinde doğruladı. ABD federal kurumları için düzeltme son tarihi: 08.04.2026.
Gerekli işlem: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://github.com/langflow-ai/langflow/security/advisories/GHSA-vwmf-pq79-vjvx ; https://nvd.nist.gov/vuln/detail/CVE-2026-33017
Açıklama
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.
Veri: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Bilgiler kaynaktaki haliyle, İngilizce yayımlanır.
Etkilenen ürünler ve sürümler
| Üretici | Ürün | Sürümler | |
|---|---|---|---|
| langflow | langflow | < 1.8.2 | |
| langflow-ai | langflow | < 1.9.0 |
Kaynaklar ve yamalar
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-vwmf-pq79-vjvx ExploitMitigationVendor Advisory
- https://github.com/langflow-ai/langflow/commit/73b6612e3ef25fdae0a752d75b0fabd47328d4f0 Patch
- https://github.com/advisories/GHSA-rvqx-wpfh-mfx7 Third Party Advisory
- https://github.com/langflow-ai/langflow/releases/tag/1.8.2 Release Notes
- https://medium.com/@aviral23/cve-2026-33017-how-i-found-an-unauthenticated-rce-in-langflow-by-reading-the-cod… ExploitThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-33017 US Government Resource
- https://www.sysdig.com/blog/cve-2026-33017-how-attackers-compromised-langflow-ai-pipelines-in-20-hours Press/Media Coverage
CPE eşleşmeleri (NVD) (1)
cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*< 1.8.2