CVE-2026-21445

Langflow Missing Authentication on Critical API Endpoints

En bref

Sévérité: HIGH 8.8
EPSS: EPSS 33.29 % · centile 98 (2026-10-27)
État: PUBLISHED
Publiée: 2026-01-02
Mise à jour: 2026-02-26
Attribuée par: GitHub_M
Statut NVD: Analyzed

Description

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.7.0.dev45, multiple critical API endpoints in Langflow are missing authentication controls. The issue allows any unauthenticated user to access sensitive user conversation data, transaction histories, and perform destructive operations including message deletion. This affects endpoints handling personal data and system operations that should require proper authorization. Version 1.7.0.dev45 contains a patch.

Scores

Version	Score	Vecteur	Évalué par
CVSS 4.0	HIGH 8.8	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P	GitHub_M
CVSS 4.0	HIGH 8.8	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X	NVD · security-advisories@github.com (Secondary)
CVSS 3.1	CRITICAL 9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	NVD · nvd@nist.gov (Primary)

Faiblesses (CWE)

CWE-306

Avis

GHSA-c5cp-vx83-jhqx — Langflow Missing Authentication on Critical API Endpoints
PYSEC-2026-1524 — Langflow Missing Authentication on Critical API Endpoints
PYSEC-2026-2571 — Langflow Missing Authentication on Critical API Endpoints

Références européennes

ENISA EUVD · EUVD-2026-0034
GCVE · GCVE-0-2026-21445

Configurations affectées (CPE NVD)

cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:* < 1.7.1

Produits affectés

Produit	Versions
langflow-ai · langflow	affected < 1.7.0.dev45

Références

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD