# 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.

- **Severity:** Medium 6.0 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Sep 2026
- **Updated:** 14 Sep 2026
- **Also known as:** GHSA-fhxm-xxcx-g6x3, GHSA-hwr2-69f4-g9h6

## 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 (Missing Authorization)

## Which versions are affected by CVE-2026-90533?

It affects 1 product.


Products: 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.

## 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](https://insights.sbomify.com/CVE-2025-71338/): Flowise through 2.2.7 - Arbitrary File Write to Remote Code Execution via document-store API (critical 10.0)
- [CVE-2026-40933](https://insights.sbomify.com/CVE-2026-40933/): Flowise: Authenticated RCE Via MCP Adapters (critical 10.0)
- [CVE-2025-61913](https://insights.sbomify.com/CVE-2025-61913/): Flowise is vulnerable to arbitrary file read, arbitrary file write (critical 10.0)
- [CVE-2025-59528](https://insights.sbomify.com/CVE-2025-59528/): Flowise has Remote Code Execution vulnerability (critical 10.0)
- [CVE-2026-52098](https://insights.sbomify.com/CVE-2026-52098/): Code injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-90533 and fix it if it is affected.

What it is: 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90533 exists.

Affected product: Flowiseai Flowise. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-90533/ (Markdown: https://insights.sbomify.com/CVE-2026-90533/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-90533
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-90533
- OSV: https://osv.dev/vulnerability/CVE-2026-90533

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-90533/
Summaries are generated and may contain mistakes; the official description above is the record.