CVE-2026-9196 Langflow OSS is affected by arbitrary code execution in component generation, validation, and custom component handling
An authenticated attacker can execute arbitrary code via improper handling of LLM-generated components, leading to potential data exfiltration or system compromise.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-9196?
CVE-2026-9196 is a high-severity code injection vulnerability in Langflow Langflow, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-94
Which versions are affected by CVE-2026-9196?
It affects 1 product.
Products include Langflow Langflow.
How do I fix CVE-2026-9196?
No fix has been published for CVE-2026-9196 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-9196 being exploited?
There is no known exploitation of CVE-2026-9196 in the wild and no public exploit code.
Other vulnerabilities in Langflow Langflow
Sources
Also known as GHSA-4q62-cj5w-qmfx.