FlowiseAI Flowise up to 3.1.2 /api/v1/upsert-history improper authorization

Summaryinfo

A vulnerability was found in FlowiseAI Flowise up to 3.1.2. It has been declared as problematic. This vulnerability affects unknown code of the file /api/v1/upsert-history. Such manipulation leads to improper authorization. This vulnerability is documented as CVE-2026-70473. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in FlowiseAI Flowise up to 3.1.2 and classified as problematic. Affected by this issue is some unknown processing of the file /api/v1/upsert-history. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality. CVE summarizes:

Flowise is a drag-and-drop user interface for building customized large language model (LLM) flows. Prior to 3.1.3, Flowise GET /api/v1/upsert-history returns the entire server-wide upsert history instead of being scoped to the requesting user, tenant, or workspace. The response can exceed 100MB and includes sensitive configuration data, including Vector Store settings such as Qdrant Server URL and collection name. The observed behavior indicates missing or insufficient authorization checks, workspace/project/tenant isolation, and pagination or limits, exposing integration parameters and infrastructure details that may enable further targeted attacks. This issue is fixed in version 3.1.3.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-70473 since 08/04/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1548.002.

Upgrading to version 3.1.3 eliminates this vulnerability.

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Productinfo

Vendor

• FlowiseAI

Name

• Flowise

Version

• 3.1.0
• 3.1.1
• 3.1.2

Website

• Product: https://github.com/FlowiseAI/Flowise/

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