Actively exploited in the wild
IBM Langflow Code Injection Vulnerability
IBM - Langflow · Listed in the CISA KEV since 2026-08-04. This indicates confirmed attacks in production environments.
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.
CVE-2026-9198
CriticalCVSS 9.8KEVExploitation Probability (EPSS)
Very high risk97th percentile - higher than 97% of all known CVEs
Summary
IBM Langflow OSS versions 1.0.0 through 1.10.0 allow unauthenticated attackers to chain the /api/v1/auto_login endpoint (generates SUPERUSER tokens) with /api/v1/validate/code (executes code via exec()), leading to remote code execution (RCE) on default installations.
Risk Assessment
An attacker can gain full control over the Langflow server by executing arbitrary code, potentially leading to complete application takeover and data access.
Recommendation
Upgrade IBM Langflow OSS to a version above 1.10.0 or apply available security patches that block unauthenticated access to these endpoints.
Original NVD description (English source)
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