CVE-2026-9198

Published Jul 17, 2026

Last updated a day ago

Exploit known CVSS critical 9.8

Langflow

web application

Zero-day

IBM Langflow OSS

Overview

AI description

Automated description summarized from trusted sources.

CVE-2026-9198 is an unauthenticated remote code execution vulnerability affecting IBM Langflow OSS versions 1.0.0 through 1.10.0. This flaw allows attackers to gain full control over default Langflow deployments by exploiting a chain of two API endpoints. Specifically, the vulnerability leverages the `/api/v1/auto_login` endpoint, which issues SUPERUSER tokens to any network caller without requiring authentication. Subsequently, attackers can utilize the `/api/v1/validate/code` endpoint to execute arbitrary Python code via `exec()`, leading to full remote code execution. This issue is classified under CWE-94, indicating improper control of code generation. The vulnerability has been addressed in Langflow version 1.10.1.

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
Source: psirt@us.ibm.com
NVD status: Analyzed
Products: langflow

Risk scores

CVSS 3.1

Type: Secondary
Base score: 9.8
Impact score: 5.9
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: CRITICAL

Known exploits

Data from CISA

Vulnerability name: IBM Langflow Code Injection Vulnerability
Exploit added on: Aug 4, 2026
Exploit action due: Aug 7, 2026
Required action: 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.

Weaknesses

psirt@us.ibm.com: CWE-94

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "A32785B1-3CF7-4BD0-B6F8-1AA77D4E565B",
            "versionEndExcluding": "1.10.1",
            "versionStartIncluding": "1.0.0",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.