CVE-2026-70476Public exploitNetwork attack vector

Cross-tenant billing manipulation via unchecked Stripe identifiers

Published Aug 4, 2026 · Updated Aug 4, 2026

Improper access control in Flowise 3.1.2 and earlier allows remote authenticated users to alter other tenants' Stripe subscriptions. Organization billing controllers forward request-supplied subscriptionId values to Stripe without matching them to the active organization's session identifier. A valid account and a victim subscription identifier are required; successful requests can change plans or seat quantities, causing unauthorized charges or service disruption.

CVSS severity8.3
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Flowise 3.1.2 and earlier allows remote authenticated users to alter other tenants' Stripe subscriptions. Organization billing controllers forward request-supplied subscriptionId values to Stripe without matching them to the active organization's session identifier. A valid account and a victim subscription identifier are required; successful requests can change plans or seat quantities, causing unauthorized charges or service disruption.

The record

CVE
CVE-2026-70476
Published
Aug 4, 2026
Updated
Aug 4, 2026
Vendor
FlowiseAI
Product
Flowise
Classifications
CWE-284, CWE-639, T1565.001
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=< 3.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

FlowiseAI · Flowiseversion=< 3.1.2

Published CVSS scores

8.3GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
CWE-639Authorization Bypass Through User-Controlled Key
T1565.001Stored Data Manipulation

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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