Vulnerability Description
Flowise versions 2.2.4 through 3.1.4 contain a missing authorization vulnerability in the POST /api/v1/openai-assistants-file/download endpoint that allows unauthenticated attackers to access private files by exploiting the endpoint's inclusion in the global authentication whitelist, which bypasses all session and API key verification. Attackers can supply valid chatflowId, chatId, and fileName identifiers to retrieve files from any chatflow on the instance, including private chatflows belonging to other workspaces or organizations.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Flowiseai | Flowise | >= 2.2.4, <= 3.1.4 |
Related Weaknesses (CWE)
References
- https://flowiseai.com/sunsetNot Applicable
- https://gist.github.com/haidang-infosec/402db84bee7aca2f57bb109b31574649?utm_souExploitMitigationThird Party Advisory
- https://www.vulncheck.com/advisories/flowise-missing-authorization-via-openai-asThird Party Advisory
FAQ
What is CVE-2026-71962?
CVE-2026-71962 is a vulnerability with a CVSS score of 7.5 (HIGH). Flowise versions 2.2.4 through 3.1.4 contain a missing authorization vulnerability in the POST /api/v1/openai-assistants-file/download endpoint that allows unauthenticated attackers to access private ...
How severe is CVE-2026-71962?
CVE-2026-71962 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-71962?
Check the references section above for vendor advisories and patch information. Affected products include: Flowiseai Flowise.