Critical 9.8
KEV-listed
CVE-2026-9198
CISA flags critical exploits, npm supply-chain attack, and water system breaches
Vendor / product: IBM Langflow OSS
Event date: 2026-08-04
Public PoC: Yes
First tracked by RiskWire: 2026-07-28
CISA KEV catalog
Added to KEV
Federal remediation due
2026-08-07 (44 days overdue)
Ransomware campaign use
Unknown
CISA description
Langflow contains a code injection vulnerability that allows unauthenticated attackers to achieve full remote code execution on default Langflow deployments.
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.
Named threat actors
Iran-linked actors
Sources & citations (5)
- Security Check-in Quick Hits: CISA Flags Critical Exploits in Langflow/N-central/Tomcat, ChainDrop npm Worm Poisons Hundreds of Packages, and Water Systems Hit Across 12+ States rodtrent.substack.com · 2026-08-05
- Critical RCE in IBM Langflow Triggers CISA Emergency Deadline yahoo.com · 2026-08-06
- Langflow CVE-2026-9198: Active Exploitation RCE via Auto-Login Superuser Token and Code Validator `exec()` Chain dev.to · 2026-08-06
- IBM's agentic AI platform is under active attack theregister.com · 2026-08-05
- Breach Roundup: Water Utilities in 12 US States Hit bankinfosecurity.com · 2026-08-06
References
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