{"id":"CVE-2026-41278","aliases":["GHSA-w47f-j8rh-wx87"],"url":"https://o3.security/vulnerability/CVE-2026-41278","summary":"Flowise: Public chatflow endpoints return unsanitized flowData including plaintext API keys, passwords, and credential IDs","details":"### Summary\n\nThe `GET /api/v1/public-chatflows/:id` endpoint returns the full chatflow object **without sanitization** for public chatflows. Docker validation revealed this is worse than initially assessed: the `sanitizeFlowDataForPublicEndpoint` function does NOT exist in the released v3.0.13 Docker image. Both `public-chatflows` AND `public-chatbotConfig` return completely raw flowData including credential IDs, plaintext API keys, and password-type fields.\n\n### Root Cause\n\n```typescript\n// packages/server/src/controllers/chatflows/index.ts:218-220\nconst chatflow = await chatflowsService.getChatflowById(req.params.id)\nif (!chatflow) return res.status(StatusCodes.NOT_FOUND).json(...)\nif (chatflow.isPublic) return res.status(StatusCodes.OK).json(chatflow) // ← NO sanitization!\n```\n\n### Docker Validation (v3.0.13)\n\nCreated public chatflow with credential IDs and passwords in flowData:\n```json\n{\n  \"flowData\": \"{\\\"nodes\\\":[{\\\"data\\\":{\\\"credential\\\":\\\"e92a39bf-...\\\",\\\"inputs\\\":{\\\"password\\\":\\\"sk-supersecretkey123\\\",\\\"apiKey\\\":\\\"should-not-leak\\\"}}}]}\"\n}\n```\n\nThe `sanitizeFlowDataForPublicEndpoint` function only exists in unreleased HEAD, and even there, only `public-chatbotConfig` calls it — `public-chatflows` never does.\n\n### Impact\n\n- **Credential IDs** leaked — enables OAuth2 token theft chain (Finding 1)\n- **Plaintext API keys and passwords** leaked — direct third-party account compromise\n- **Node configurations** leaked — reveals internal architecture and endpoint URLs\n- Both `public-chatflows` and `public-chatbotConfig` are affected in the released version\n\n### Suggested Fix\n\nApply sanitization to both public endpoints:\n\n```typescript\nconst sanitized = sanitizeFlowDataForPublicEndpoint(chatflow)\nreturn res.status(StatusCodes.OK).json(sanitized)\n```\n\nEnsure the sanitization function strips all `credential`, `password`, `apiKey`, and `secretKey` fields from `flowData`.\n\n---\n\n## References\n\n- `packages/server/src/controllers/chatflows/index.ts` lines 209-236\n- `packages/server/src/utils/sanitizeFlowData.ts` lines 11-34 (exists only in unreleased HEAD)\n\n## Credits\n- Shinobi Security - https://github.com/shinobisecurity","published":"2026-04-23T19:52:20.973Z","modified":"2026-10-28T02:30:52.915404673Z","cvss":null,"epss":{"score":0.00421,"percentile":0.34703,"asOf":"2026-08-10"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"flowise","fixedVersion":"3.1.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41278.json"},{"type":"ADVISORY","url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-w47f-j8rh-wx87"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41278"},{"type":"PACKAGE","url":"https://github.com/FlowiseAI/Flowise"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:52.915404673Z"}}