CVE-2026-9198: CISA Warns of Exploited IBM Langflow Flaw

What This Means

CVE ID: CVE-2026-9198
Vendor/Product: IBM Langflow
Vulnerability: IBM Langflow Code Injection Vulnerability
Description: Langflow contains a code injection vulnerability that allows unauthenticated attackers to achieve full remote code execution on default Langflow deployments.
Added to CISA's Known Exploited Vulnerabilities catalog: 2026-08-04 (this means CISA has confirmed active, real-world exploitation)
Federal remediation 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.
Known ransomware campaign use: Unknown
Weakness types (CWE): CWE-94

How to Fix It

• Apply vendor-provided mitigations immediately
• Comply with CISA BOD 26-04 by August 7, 2026
• Restrict internet exposure of Langflow instances
• Perform forensics triage on all affected systems