CVE-2026-9196: Langflow OSS is affected by arbitrary code execution in component generation, validation, and custom component handling
IBM Langflow OSS 1.0.0 through 1.10.3 could allow an authenticated attacker to execute unintended code during Agentic Assistant validation due to improper handling of LLM‑generated components. The application executes model‑generated Python code in the backend during validation prior to user approval, which may allow an attacker to trigger side effects such as outbound network access, file system interaction, or data exfiltration with the privileges of the Langflow backend process.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
IBM Langflow OSSto a version that resolves this vulnerability.Fixed in 1.11.0 - Compensating control
Reduce potential impact while migrating by restricting the Langflow backend process network egress (outbound traffic) and filesystem access so that any unintended Python code execution during Agentic Assistant validation cannot freely exfiltrate data or reach external systems.
- Operational
Assume models/inputs used prior to the upgrade may have triggered side effects during Agentic Assistant validation; review and remove any attacker-created artifacts, and rotate any exposed secrets/credentials used by the Langflow backend process.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-9196?
CVE-2026-9196 has a risk rating of 60, indicating a moderate level of severity.
How do I fix CVE-2026-9196?
To fix CVE-2026-9196, ensure that validation occurs only after user approval of any LLM-generated components.
What does CVE-2026-9196 exploit?
CVE-2026-9196 exploits improper handling of LLM-generated components, allowing code execution prior to user approval.
Who is affected by CVE-2026-9196?
CVE-2026-9196 affects users of IBM Langflow OSS who utilize Agentic Assistants.
What should I do if my system is vulnerable to CVE-2026-9196?
If your system is vulnerable to CVE-2026-9196, it is recommended to apply the latest security patches and review your application’s implementation of validation processes.