GHSA-8r8h-6vcc-xhrv
Suggest an improvement- Source
- https://github.com/advisories/GHSA-8r8h-6vcc-xhrv
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-8r8h-6vcc-xhrv/GHSA-8r8h-6vcc-xhrv.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-8r8h-6vcc-xhrv
- Aliases
- Published
- 2026-08-04T17:43:36Z
- Modified
- 2026-08-04T18:11:01Z
- Severity
-
- 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Flowise: RBAC Bypass Leading to Unauthorized Workspace Variables Disclosure
- Details
-
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).
- Database specific
{ "cwe_ids": [ "CWE-863" ], "github_reviewed": true, "github_reviewed_at": "2026-08-04T17:43:36Z", "nvd_published_at": null, "severity": "HIGH" }- References
Affected packages
npm / flowise
Package
- Name
- flowise
- View open source insights on deps.dev
- Purl
- pkg:npm/flowise