IBM Langflow up to 1.10.0 Code Validation API Endpoint /api/v1/validate/code exec sandbox

Summaryinfo

A vulnerability classified as critical was found in IBM Langflow up to 1.10.0. The impacted element is the function exec of the file /api/v1/validate/code of the component Code Validation API Endpoint. Executing a manipulation can lead to sandbox. This vulnerability is tracked as CVE-2026-8481. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in IBM Langflow up to 1.10.0 and classified as critical. This vulnerability affects the function exec of the file /api/v1/validate/code of the component Code Validation API Endpoint. The manipulation with an unknown input leads to a sandbox vulnerability. The CWE definition for the vulnerability is CWE-265. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

IBM Langflow OSS 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the code validation API endpoint. The POST /api/v1/validate/code endpoint accepts user-supplied Python code and executes it directly using Python's built-in exec() function without sandboxing, input validation, or privilege restrictions, enabling any authenticated user to execute arbitrary system commands with the full privileges of the Langflow server process.

The advisory is available at ibm.com. This vulnerability was named CVE-2026-8481 since 05/13/2026. The exploitation appears to be easy. The attack can be initiated 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 07/18/2026). This vulnerability is assigned to T1611 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.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• IBM

Name

• Langflow

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10.0

License

• commercial

Website

• Vendor: https://www.ibm.com/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion