How severe is CVE-2026-70471?

No CVSS score has been assigned to CVE-2026-70471 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by CVE-2026-70471?

CVE-2026-70471 affects the following packages: flowise (npm). Ecosystems affected: npm.

How do I fix CVE-2026-70471?

Update flowise to 3.1.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-70471 is resolved across your whole dependency graph.

How do I detect CVE-2026-70471 in my npm dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for flowise, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate CVE-2026-70471 if there is no patch (or I can't update yet)?

Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Is CVE-2026-70471 actively exploited in the wild?

No public exploit code has been indexed for CVE-2026-70471 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2026-70471?

CVE-2026-70471 has an EPSS (Exploit Prediction Scoring System) score of 0.4%, placing it in the 36th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2026-70471?

CVE-2026-70471 is classified as CWE-863 (CWE-863). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was CVE-2026-70471 published, and has it been updated?

CVE-2026-70471 was published on August 4, 2026 and was last updated on October 28, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

Not in CISA KEV

CVE-2026-70471 — flowise

CVE-2026-70471 is a CWE-863 vulnerability in flowise. A fix is available for flowise — see the affected versions and patch details below.

Flowise: RBAC Bypass Leading to Unauthorized Workspace Variables Disclosure

Also known asGHSA-8r8h-6vcc-xhrv

Published

Aug 4, 2026

Updated

Oct 28, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 2, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2026-70471.

EPSS Exploitation Probability

via FIRST.org ↗

0.4%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs36th percentile — riskier than 36% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

0other npm packages depend on this — each one inherits the vulnerability until it's patched upstream

flowisenpm

9Kdownloads / week

Description

Finding — Unauthorized Workspace Variables disclosure via $vars injection (bypasses variables:view)

What’s wrong (code locations)

Variables for the active workspace are fetched without checking “variables:view” at this call site: flowise-src/ packages/components/src/utils.ts:932
Runtime variables are resolved from server environment variables: flowise-src/packages/components/src/utils.ts:976
$vars is always injected into the code execution sandbox: flowise-src/packages/components/src/utils.ts:1782
The official Variables API is permission-protected (contrast): flowise-src/packages/server/src/routes/variables/ index.ts:11

Why it is a privilege boundary bypass

A user/API key might be denied variables:view (and the /api/v1/variables route enforces it), but they can still:

call /api/v1/node-custom-function (Finding 1)
and have $vars pre-populated with all variables for the workspace, including runtime values from process.env

What data is exposed

Inside the custom JS context, $vars contains a flat map of:

Variable.name -> Variable.value for static variables, and
Variable.name -> process.env[Variable.name] for runtime variables (type === 'runtime')

This can expose secrets such as database passwords, JWT secrets, SMTP passwords, cloud keys, etc., depending on what the workspace Variables are configured to map.

Recommended fix (minimum)

Do not inject $vars unless the caller is authorized:
- enforce variables:view before injecting $vars, or
- inject only an explicit allowlist of variables needed for the function
Consider disabling or heavily restricting type=runtime variables in self-hosted environments (or restrict which env keys may be mapped).

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`flowise`	all versions	3.1.3`npm install flowise@3.1.3`

Affected Products

1 product · 1 configurations

Application

flowiseflowiseai

< 3.1.3

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for flowise, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update flowise to 3.1.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-70471 is resolved across your whole dependency graph.
Workarounds
Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

## Finding — Unauthorized Workspace Variables disclosure via $vars injection (bypasses variables:view) ### What’s wrong (code locations) - Variables for the active workspace are fetched without checking “variables:view” at this call site: flowise-src/ packages/components/src/utils.ts:932 - Runtime variables are resolved from server environment variables: flowise-src/packages/components/src/utils.ts:976 - $vars is always injected into the code execution sandbox: flowise-src/packages/components/src/utils.ts:1782 - The official Variables API is permission-protected (contrast): flo

O3 Security · Impact-Aware SCA

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