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CVE-2026-90533

6.5 · MEDIUM

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…

Published Sep 12, 2026flowiseaiCWE-862EPSS 0.34%

Overview

CVE-2026-90533 is a medium-severity vulnerability affecting flowiseai flowise. It was published on September 12, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from flowiseai. Update flowise to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
flowiseaiflowise>= 0, < 3.1.4Affected

References

GitHubgithub.com/FlowiseAI/Flowise/security/advisories/GHSA-fhxm-xxcx-g6x3Refwww.vulncheck.com/advisories/flowise-before-3.1.4-broken-access-control-via-organizationuserGitHubgithub.com/FlowiseAI/Flowise/security/advisories/GHSA-fhxm-xxcx-g6x3

How CyberStrike helps

Frequently asked questions

What is CVE-2026-90533?

CVE-2026-90533 is a medium-severity vulnerability affecting flowiseai flowise. It was published on September 12, 2026 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-90533?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-90533?

Check the references section for vendor advisories and patches from flowiseai. Update flowise to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-90533?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-90533 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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