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CVE-2026-9198

9.8, critical Known exploited

IBM Langflow Code Injection Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
9.8, critical critical CVSS v3.1
EPSS, next 30 days
29% higher than 98.1% of scored CVEs
Exploitation
Confirmed in the wild
Published
17 Jul 20263 months ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 4 Aug 2026. US federal agencies had to remediate by 7 Aug 2026, a deadline that has passed.

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.

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

Details

Vendor
IBM
Product
Langflow OSS
Weakness
CWE-94 (opens in a new tab)
Status
Analyzed
Updated
17 Aug 2026
Assigner
psirt@us.ibm.com

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

References 2

Advisories 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other IBM CVEs

Every IBM CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2022-47986 IBM Aspera Faspex Code Execution Vulnerability KEV EPSS 100% 9.8, critical
  • CVE-2020-4427 IBM Data Risk Manager Security Bypass Vulnerability KEV EPSS 70% 9.8, critical
  • CVE-2020-4428 IBM Data Risk Manager Remote Code Execution Vulnerability KEV EPSS 62% 9.1, critical
  • CVE-2020-4430 IBM Data Risk Manager Directory Traversal Vulnerability KEV EPSS 69% 4.3, medium
  • CVE-2019-4716 IBM Planning Analytics Remote Code Execution Vulnerability KEV EPSS 86% 9.8, critical
  • CVE-2015-7450 IBM WebSphere Application Server and Server Hypervisor Edition Code Injection. KEV EPSS 98% 9.8, critical
  • CVE-2013-3993 IBM InfoSphere BigInsights Invalid Input Vulnerability KEV EPSS 5% 6.5, medium
  • CVE-2026-102917 IBM i Improper Privilege Management Vulnerability 7.8, high

Beyond this page

Is CVE-2026-9198 in your network?

This page tells you how dangerous CVE-2026-9198 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2026-9198 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

  • EXYS7600 OCELOT

    Find it before attackers do

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.