Flowise: Parameter Override Bypass Remote Command Execution

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

7.7 · CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

EPSS

• CVE-2026-41268: 17.44% estimated exploitation activity in the next 30 days; percentile 97.13 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary Flowise is vulnerable to a critical unauthenticated remote command execution (RCE) vulnerability. It can be exploited via a parameter override bypass using the FILE-STORAGE:: keyword combined with a NODEOPTIONS environment variable injection. This allows for the execution of arbitrary system commands with root privileges within the containerized Flowise instance, requiring only a single HTTP request and no authentication or knowledge of the instance. Details The vulnerability is in a validation check within the replaceInputsWithConfig function within packages/server/src/utils/index.ts. The check for FILE-STORAGE:: was intended to handle file-type inputs but has three issues: 1. Uses .includes() instead of .startsWith(): The check passes if FILE-STORAGE:: appears ANYWHERE in the string, not just at the beginning. A remote user can embed it in a comment: / FILE-STORAGE:: / { custom config } 2. No parameter type validation: The check doesn't verify that the parameter is actually…

Published by the source

16 Apr 2026, 21:46 UTC

Last modified by the source

5 May 2026, 16:11 UTC

Source last checked

26 Oct 2026, 12:50 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-cvrr-qhgw-2mm6

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-cvrr-qhgw-2mm6

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# Patch Next advisory brief: CVE-2026-41268

Advisory: Flowise: Parameter Override Bypass Remote Command Execution
IDs: CVE-2026-41268, GHSA-cvrr-qhgw-2mm6
Record: https://patchnext.com/advisories/cve-2026-41268 (revision 2, source checked 26 Oct 2026, 12:50 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 7.7)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: flowise-components 3.1.0; flowise 3.1.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm flowise-components: affected <= 3.0.13; fixed in 3.1.0
- npm flowise: affected <= 3.0.13; fixed in 3.1.0

## Suggested inspection (read-only)
- `npm ls flowise-components --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.
- `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-components, 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-cvrr-qhgw-2mm6 (OSV record GHSA-cvrr-qhgw-2mm6 lists affected ranges: npm flowise >=0 =0 <3.1.0 (fixed))
- Verified: https://github.com/advisories/GHSA-cvrr-qhgw-2mm6 (GitHub-reviewed advisory GHSA-cvrr-qhgw-2mm6 lists affected ranges: npm flowise >=0 =0 <=3.0.13)

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