IBM Langflow OSS up to 1.10.3 Agentic Assistant Validation code injection

Summaryinfo

A vulnerability classified as critical has been found in IBM Langflow OSS up to 1.10.3. The impacted element is an unknown function of the component Agentic Assistant Validation. This manipulation causes code injection. This vulnerability is handled as CVE-2026-9196. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical was found in IBM Langflow OSS up to 1.10.3. Affected by this vulnerability is some unknown processing of the component Agentic Assistant Validation. The manipulation with an unknown input leads to a code injection vulnerability. The CWE definition for the vulnerability is CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at ibm.com. This vulnerability is known as CVE-2026-9196 since 05/21/2026. The exploitation appears to be easy. The attack can be launched remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/05/2026). The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• IBM

Name

• Langflow OSS

Version

• 1.10.0
• 1.10.1
• 1.10.2
• 1.10.3

License

• commercial

Website

• Vendor: https://www.ibm.com/

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