CVE-2026-33309

Katalog CVE

CVSS 9.9 · Critical EPSS 1,0%

Kerentanan Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') pada langflow. Skor CVSS 3.1 9.9 (Critical) menurut github.com.

Deskripsi (NVD)

Langflow is a tool for building and deploying AI-powered agents and workflows. Versions 1.2.0 through 1.8.1 have a bypass of the patch for CVE-2025-68478 (External Control of File Name), leading to the root architectural issue within `LocalStorageService` remaining unresolved. Because the underlying storage layer lacks boundary containment checks, the system relies entirely on the HTTP-layer `ValidatedFileName` dependency. This defense-in-depth failure leaves the `POST /api/v2/files/` endpoint vulnerable to Arbitrary File Write. The multipart upload filename bypasses the path-parameter guard, allowing authenticated attackers to write files anywhere on the host system, leading to Remote Code Execution (RCE). Version 1.9.0 contains an updated fix.

Rincian

Terbit di NVD

24 Maret 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

9.9 (Critical), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-73: External Control of File Name or Path
CWE-94: Improper Control of Generation of Code ('Code Injection')
CWE-284: Improper Access Control

EPSS (30 hari)

1,0% peluang dieksploitasi; lebih tinggi dari 63,3% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/langflow-ai/langflow/security/advisories/GHSA-g2j9-7rj2-gm6c exploit · mitigasi · advisory vendor