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Medium, CVSS 5.3amended

Flowise: Cross-Workspace Chatflow Disclosure via chatflows/apikey Endpoint Returns All Unprotected Chatflows

CVE-2026-56268GHSA-c2c9-mfw7-p8hw

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (flowise 3.1.2), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • npm flowise

    Affected
    <= 3.1.1
    Fixed in
    3.1.2

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N · score source
EPSS
  • CVE-2026-56268: 0.39% estimated exploitation activity in the next 30 days; percentile 33.28 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Summary The /api/v1/chatflows/apikey/:apikey endpoint (whitelisted, accessible with API key auth only) returns all chatflows bound to the provided API key AND all chatflows across the entire system that have no API key assigned. This crosses workspace boundaries, allowing a user in Workspace A who has a valid API key to read the full configuration (including flowData, chatbotConfig, system prompts, and node configurations) of chatflows from Workspace B, Workspace C, and all other workspaces, as long as those chatflows have no API key assigned. Details The controller at packages/server/src/controllers/chatflows/index.ts:90-107 validates the API key and calls the service: The service at packages/server/src/services/chatflows/index.ts:223-245 builds the database query: When keyonly is not provided as a query parameter (which is the default case), the query expands to include: - All chatflows bound to the provided API key (same workspace, expected behavior) - ALL chatflows with apikeyid…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 3 · amended ·

    Amended from ghsa record GHSA-c2c9-mfw7-p8hw

  2. Revision 2 · amended ·

    Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

  3. Revision 1 · created ·

    Published from osv record GHSA-c2c9-mfw7-p8hw

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2026-56268

Advisory: Flowise: Cross-Workspace Chatflow Disclosure via chatflows/apikey Endpoint Returns All Unprotected Chatflows
IDs: CVE-2026-56268, GHSA-c2c9-mfw7-p8hw
Record: https://patchnext.com/advisories/cve-2026-56268 (revision 3, source checked 26 Oct 2026, 12:57 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: flowise 3.1.2. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm flowise: affected <= 3.1.1; fixed in 3.1.2

## Suggested inspection (read-only)
- `npm ls flowise --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on flowise.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-c2c9-mfw7-p8hw (OSV record GHSA-c2c9-mfw7-p8hw lists affected ranges: npm flowise >=0 <3.1.2 (fixed))
- Verified: https://github.com/advisories/GHSA-c2c9-mfw7-p8hw (GitHub-reviewed advisory GHSA-c2c9-mfw7-p8hw lists affected ranges: npm flowise >=0 <=3.1.1)

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