CVE-2026-9198 | IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated… | CVSS 9.8 CRITICAL

Description

IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to chain /api/v1/auto_login (mints SUPERUSER tokens to any network caller) with /api/v1/validate/code (executes user code via exec()) to achieve full RCE on default Langflow deployments

Metadata

CVE ID: CVE-2026-9198
State: PUBLISHED
Assigner: ibm
Reserved: 2026-05-21 15:40 UTC
Published: 2026-07-17 17:36 UTC
Last updated: 2026-07-17 17:52 UTC
Primary CWE: CWE-94
CWE-94 Improper Control of Generation of Code ('Code Injecti…
Vendor / Product: IBM / Langflow OSS
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
IBM	Langflow OSS	—	1.0.0 ≤ 1.10.0

Weakness (CWE)

CWE	Source	Description
CWE-94	cna	CWE-94 Improper Control of Generation of Code ('Code Injection')

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (1)

https://www.ibm.com/support/pages/node/7278927