CVE-2026-90533

Medium

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.

SeverityMedium

CVSS6.5

Exploit probability—

ProductFlowise

PublishedSep 12, 2026

First seenSep 12, 2026

Weakness typeCWE-862Missing authorization

How to fix

Update

flowiseai flowise3.1.4 or later

Vendor advisories

github.com/FlowiseAI/Flowise/security/advisories/GHSA-fhxm-xxcx-g6x3

Affected products

Product	Affected versions	Fixed in
flowiseai flowise	v < 3.1.4	3.1.4

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