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

High 7.2 Published 6 Aug 2026 Updated 14 Aug 2026

Authenticated users with view permissions can modify knowledge bases and consume API credits via unprotected document store endpoints.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-67621?

CVE-2026-67621 is a high-severity missing authorization vulnerability in Flowiseai Flowise, published on 6 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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.

Weakness: CWE-862

Which versions are affected by CVE-2026-67621?

It affects 1 product.

Products include Flowiseai Flowise.

How do I fix CVE-2026-67621?

No fix has been published for CVE-2026-67621 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-67621 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-67621 exists.

All Flowiseai Flowise vulnerabilities

Sources

Also known as GHSA-7q53-9j99-gg5c.