CVE-2026-70473Public exploitNetwork attack vector

Cross-tenant data disclosure via unscoped upsert-history query

Published Aug 4, 2026 · Updated Aug 4, 2026

Missing authorization in Flowise before 3.1.3 allows remote authenticated users to read server-wide upsert history across workspaces. GET /api/v1/upsert-history passes no workspace-bound identifier to the history query, so it returns global records containing vector store URLs, collection names, and pipeline settings. Any low-privileged account can retrieve other tenants' configuration data; repeated oversized responses can also consume service resources.

CVSS severity8.3
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Flowise before 3.1.3 allows remote authenticated users to read server-wide upsert history across workspaces. GET /api/v1/upsert-history passes no workspace-bound identifier to the history query, so it returns global records containing vector store URLs, collection names, and pipeline settings. Any low-privileged account can retrieve other tenants' configuration data; repeated oversized responses can also consume service resources.

The record

CVE
CVE-2026-70473
Published
Aug 4, 2026
Updated
Aug 4, 2026
Vendor
FlowiseAI
Product
Flowise
Classifications
CWE-202, CWE-862, CWE-200, T1213.006
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 3.1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FlowiseAI · Flowiseversion=< 3.1.3

Published CVSS scores

8.3GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:H/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-202Exposure of Sensitive Information Through Data Queries
CWE-862Missing Authorization
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1213.006Data from Information Repositories: Databases

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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