CVE•Published 2026-07-17•Modified 2026-07-23•1 article on news•5 live references•NVD data

CVE-2026-9103Langflow · Langflow

Vulnerability data via NVD (ingested)

CVSS v3.1

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 67% of all CVEs

Weaknesses (CWE)

CWE-306Missing Authentication for Critical Function

Description

IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to gain unauthorized access due to improper authentication in the /api/v1/login/auto_login endpoint. The endpoint issues long-lived superuser bearer tokens without requiring authentication when the AUTO_LOGIN configuration is enabled (enabled by default), which may allow an unauthenticated network attacker to obtain full administrative access. Additionally, permissive cross-origin resource sharing (CORS) settings may allow tokens to be exposed to unintended origins, increasing the risk of unauthorized access.

Timeline

Published 2026-07-17

Modified 2026-07-23

External references

NVD MITRE Exploit-DB GitHub PoC VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag2,292 hosts

vuln:CVE-2026-9103

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Langflow Langflow"

All exposed Langflow Langflow instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Langflow"

HTTP body or banner mentions "Langflow" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-9103