GHSA-mq4r-h2gh-qv7x: Flowise Allows Mass Assignment in `/api/v1/leads` Endpoint
- Identifiers
- CVE-2026-30822GHSA-mq4r-h2gh-qv7x
- Published
- Record updated
- Affected
- flowise <= 3.0.12
- Fixed in
- 3.0.13
- released February 3, 2026, 31 days before disclosure
- Known exploitation
- Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
- EPSS
- 15.0%
Summary
A mass assignment flaw in the `/api/v1/leads` endpoint of Flowise lets unauthenticated users set internal entity fields (`id`, `createdDate`, `chatId`) by including them in the request body. The `createLead` function in `/packages/server/src/services/leads/index.ts` calls `Object.assign(newLead, body)` without filtering fields, overwriting the auto-generated values before save. The endpoint is listed in `WHITELIST_URLS` in `/packages/server/src/utils/constants.ts`, so no authentication is required. The source is tagged CWE-915.
Mitigation
The source does not state a fix yet. Check the original advisory for updates.
Affected packages in the Exposure Registry
Matched by package name and ecosystem. Each entry shows whether the package delegates to a language model and how many tracked packages depend on it.
- flowisenpmLLM dependency since 2024-03-12
Related items
- MediumCVE-2026-121936: easyVoice server-side request forgery through openaiBaseUrl in /api/v1/ttsSimilar attack · NVD/CVE Database
- MediumCVE-2026-118628: MLflow get-artifacts server-side request forgery information disclosureSimilar attack · NVD/CVE Database
- HighCVE-2026-118625: MLflow Tracking Server privilege escalation via get_endpointsSimilar attack · NVD/CVE Database
- InfoWhen trust becomes the payload: Inside the threats, etc quarterly reportSimilar attack · Elastic Security Labs
- MediumCritical Langflow flaws enable authentication bypass and RCESimilar attack · CSO Online