CVE-2026-55255: langflow

csirt@kutim:~/threat-intel/cve/CVE-2026-55255

CVSS 8.4 · High KEV · sudah dieksploitasi EPSS 0,89%

Kerentanan Authorization Bypass Through User-Controlled Key pada langflow. Skor CVSS 3.1 8.4 (High) menurut github.com. Masuk katalog KEV CISA pada 7 Juli 2026, artinya sudah terbukti dieksploitasi.

Deskripsi (NVD)

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.1, an Insecure Direct Object Reference (IDOR) vulnerability in /api/v1/responses endpoint allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request. This vulnerability is fixed in 1.9.1.

Rincian

Terbit di NVD: 23 Juni 2026
Terakhir diubah: 7 Oktober 2026
Status NVD: Analyzed
CVSS 3.1: 8.4 (High), sumber github.com
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-639: Authorization Bypass Through User-Controlled Key
EPSS (30 hari): 0,89% peluang dieksploitasi; lebih tinggi dari 58,2% CVE lain

Known Exploited Vulnerabilities (CISA)

Nama: Langflow Authorization Bypass Through User-Controlled Key Vulnerability
Masuk KEV: 7 Juli 2026
Tenggat CISA: 10 Juli 2026 (untuk instansi federal AS)
Ransomware: Belum tercatat
Tindakan wajib: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
langflow	langflow	Semua versi sebelum 1.9.1

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/langflow-ai/langflow/security/advisories/GHSA-qrpv-q767-xqq2 exploit · mitigasi · advisory vendor
https://github.com/langflow-ai/langflow/commit/2c9f498d664a3c32698b57d7c5e752625291060e patch
https://github.com/langflow-ai/langflow/pull/12832 issue tracking · patch
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-55255 pemerintah AS
https://webflow.sysdig.com/blog/understanding-langflow-cve-2026-55255-and-why-higher-cvss-vulnerabilities-aren... advisory pihak ketiga

Sumber: NVD · CVE.org · KEV CISA · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 8 Okt 2026, 06:25 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.