IBM Langflow OSS up to 1.11.1 Build Trigger Type privileges management

Summaryinfo

A vulnerability described as critical has been identified in IBM Langflow OSS up to 1.11.1. This affects an unknown part of the component Build Trigger. Such manipulation of the argument Type leads to privileges management. This vulnerability is documented as CVE-2026-19295. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in IBM Langflow OSS up to 1.11.1. It has been rated as critical. Affected by this issue is an unknown code block of the component Build Trigger. The manipulation of the argument type with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. CVE summarizes:

IBM Langflow OSS 1.0.0 through 1.11.1 allows an authenticated attacker to execute arbitrary operating system commands in the server process by saving a flow with a crafted type field value and triggering a build of a wrapper flow that references it. This allowed privilege escalation from "authenticated flow user" to arbitrary OS-level command execution under the server process identity, bypassing the LANGFLOW_ALLOW_CUSTOM_COMPONENTS=false policy control.

The advisory is available at ibm.com. This vulnerability is handled as CVE-2026-19295 since 08/07/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 08/29/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

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

• 1.11.0
• 1.11.1

License

• commercial

Website

• Vendor: https://www.ibm.com/

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