CVE-2026-90533 Flowise before 3.1.4 Broken Access Control via organizationuser
Authenticated users can access the organization owner's sensitive credentials, enabling offline cracking and potential account takeover.
- 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-2026-90533?
CVE-2026-90533 is a medium-severity missing authorization vulnerability in Flowiseai Flowise, published on 12 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Flowise before 3.1.4 contains a broken access control vulnerability in GET /api/v1/organizationuser that allows any authenticated organization member to retrieve the organization owner's full user record including bcrypt password hash and temporary tokens. Attackers can query the endpoint with any user ID to obtain the owner's credential hash for offline cracking, enabling account takeover of the highest-privileged account.
Weakness: CWE-862
Which versions are affected by CVE-2026-90533?
It affects 1 product.
Products include Flowiseai Flowise.
How do I fix CVE-2026-90533?
No fix has been published for CVE-2026-90533 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-2026-90533 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90533 exists.
Other vulnerabilities in Flowiseai Flowise
- CVE-2025-71338 Flowise through 2.2.7 - Arbitrary File Write to Remote Code Execution via document-store API
- CVE-2026-40933 Flowise: Authenticated RCE Via MCP Adapters
- CVE-2025-61913 Flowise is vulnerable to arbitrary file read, arbitrary file write
- CVE-2025-59528 Flowise has Remote Code Execution vulnerability
- CVE-2026-52098 Code injection in n/a
Sources
Also known as GHSA-fhxm-xxcx-g6x3, GHSA-hwr2-69f4-g9h6.