IBM Langflow OSS up to 1.11.5 File/Read File access control

Summaryinfo

A vulnerability was found in IBM Langflow OSS up to 1.11.5. It has been classified as problematic. Affected is an unknown function of the component File/Read File. Performing a manipulation results in access control. This vulnerability is known as CVE-2026-9225. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in IBM Langflow OSS up to 1.11.5. It has been classified as problematic. This affects an unknown code block of the component File/Read File. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality. The summary by CVE is:

IBM Langflow OSS 1.0.0 through 1.11.5 Langflow could allow an authenticated attacker to access sensitive files belonging to other users due to improper access control in the File/Read File component. When executing flows through the /api/v1/run/advanced/{flow_id} endpoint, the application allows component inputs to reference storage paths using arbitrary user or flow identifiers without verifying ownership. An attacker with low‑privileged authenticated access can supply a crafted file path pointing to another user’s storage namespace, causing the backend to read and return the contents of files uploaded by other users. This vulnerability bypasses intended authorization checks enforced by the file management API and may result in unauthorized disclosure of sensitive user data.

The advisory is shared at ibm.com. This vulnerability is uniquely identified as CVE-2026-9225 since 05/21/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/10/2026). MITRE ATT&CK project uses the attack technique T1068 for this issue.

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

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• IBM

Name

• Langflow OSS

Version

• 1.11.0
• 1.11.1
• 1.11.2
• 1.11.3
• 1.11.4
• 1.11.5

License

• commercial

Website

• Vendor: https://www.ibm.com/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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