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Medium, CVSS 6.4amended

NocoBase has SSRF in Workflow HTTP Request and Custom Request Plugins

CVE-2026-40346GHSA-mvvv-v22x-xqwp

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (@nocobase/plugin-workflow-request 2.0.37), 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

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
6.4 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N · score source
EPSS
  • CVE-2026-40346: 0.38% estimated exploitation activity in the next 30 days; percentile 32.53 (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 NocoBase's workflow HTTP request plugin and custom request action plugin make server-side HTTP requests to user-provided URLs without any SSRF protection. An authenticated user can access internal network services, cloud metadata endpoints, and localhost. Vulnerable Code 1. Workflow HTTP Request Plugin packages/plugins/@nocobase/plugin-workflow-request/src/server/RequestInstruction.ts lines 117-128: The url at line 98 comes directly from user workflow configuration with only whitespace trimming. 2. Custom Request Action Plugin packages/plugins/@nocobase/plugin-action-custom-request/src/server/actions/send.ts lines 172-198: Missing Protections - No request-filtering-agent or SSRF library (confirmed via grep across entire codebase) - No private IP range filtering - No cloud metadata endpoint blocking - No URL scheme validation - No DNS rebinding protection Attack Scenario 1. Authenticated user creates a workflow with HTTP Request node 2. Sets URL to…

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

    Amended from ghsa record GHSA-mvvv-v22x-xqwp

  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-mvvv-v22x-xqwp

Agent brief

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# Patch Next advisory brief: CVE-2026-40346

Advisory: NocoBase has SSRF in Workflow HTTP Request and Custom Request Plugins
IDs: CVE-2026-40346, GHSA-mvvv-v22x-xqwp
Record: https://patchnext.com/advisories/cve-2026-40346 (revision 3, source checked 26 Oct 2026, 12:52 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.4)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: @nocobase/plugin-workflow-request 2.0.37. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @nocobase/plugin-workflow-request: affected < 2.0.37; fixed in 2.0.37

## Suggested inspection (read-only)
- `npm ls @nocobase/plugin-workflow-request --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 @nocobase/plugin-workflow-request.
- 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-mvvv-v22x-xqwp (OSV record GHSA-mvvv-v22x-xqwp lists affected ranges: npm @nocobase/plugin-workflow-request >=0 <2.0.37 (fixed))
- Verified: https://github.com/advisories/GHSA-mvvv-v22x-xqwp (GitHub-reviewed advisory GHSA-mvvv-v22x-xqwp lists affected ranges: npm @nocobase/plugin-workflow-request >=0 <2.0.37)

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