IBM Langflow's Code Injection Flaw Allows Unauthenticated Remote Attackers to Execute Arbitrary Code on the AI Workflow Platform; CISA's August 7th KEV Deadline Has Passed

Last refreshed2026-09-27

Status: KEV | Advisory ID: CVE-2026-9198

Key Details

CVE	CVE-2026-9198
Vulnerability Name	IBM Langflow Code Injection Vulnerability
CVSS Score / Version	9.8 (Critical) / CVSS v3.1
Updated	2026-09-22
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	IBM Langflow and langflow Langflow
Exploitation status	Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation.
Classified as	CWE-94 (Improper Control of Generation of Code ('Code Injection'))
KEV listing	Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-08-04.
Exploitation prediction (EPSS)	28.66% probability of exploitation in the next 30 days (98% percentile) -- FIRST.org's EPSS model.
Federal remediation deadline	2026-08-07 (CISA KEV, Binding Operational Directive).

Affected Products, Subsystems & Sectors

Vendor	Product	Affected Versions	Patch Status
IBM	Langflow
langflow	Langflow

Vendor

Product

Affected Versions

Patch Status

IBM

Langflow

langflow

Langflow

Subsystems	General OT
Sectors	Multiple

What to Know

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

What to Do

Monitor IBM's and langflow's web pages for any future patch releases.

References

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-9198
CVE	https://www.cve.org/CVERecord?id=CVE-2026-9198

Source

Reference

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-9198

CVE

https://www.cve.org/CVERecord?id=CVE-2026-9198

KEV Required Action

Field	Value
KEV Link	https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Date Added to KEV	2026-08-04
Required Action Due Date	2026-08-07
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.

Field

Value

KEV Link

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

Date Added to KEV

2026-08-04

Required Action Due Date

2026-08-07

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.