CVE-2026-70473

Flowise: Information Disclosure in GET /api/v1/upsert-history returns the entire server-wide upsert history

HIGH
8.5
CVSS Score
Published: August 4, 2026 at 05:56 PM UTC
Updated: October 24, 2026 at 03:10 PM UTC
1 product affected across 1 vendorFlowise

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Severity
HIGH8.5
Exploit prediction
EPSS 0.5%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.1.3
Affected range stops below 3.1.3, so it looks safe — our inference, not a vendor statement

References (4)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-fr6g-7cq8-fg82
x_refsource_MISCIssue TrackingPatch
Source: cverecord
https://github.com/FlowiseAI/Flowise/pull/6170
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/FlowiseAI/Flowise/releases/tag/[email protected]

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-200CWE-202CWE-862

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