# CVE-2025-40571: Missing authorization in Mendix OIDC SSO (Mendix 10.12 compatible)

> An adversary can modify the module during development to gain unauthorized read and write access to all tokens, leading to privilege misuse.

- **Severity:** Low 2.1 (`CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 May 2025
- **Updated:** 14 Apr 2026
- **Also known as:** GHSA-8h7m-cr8f-h7x7

## What is CVE-2025-40571?

CVE-2025-40571 is a low-severity missing authorization vulnerability in Siemens Mendix OIDC SSO (Mendix 10.12 compatible), published on 13 May 2025. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability has been identified in Mendix OIDC SSO (Mendix 10.12 compatible) (All versions < V4.0.1), Mendix OIDC SSO (Mendix 9 compatible) (All versions < V3.3.1), Mendix OIDC SSO V4.2 (Mendix 10 compatible) (All versions < V4.2.1), Mendix OIDC SSO V4.3 (Mendix 10 compatible) (All versions). The Mendix OIDC SSO module grants read and write access to all tokens exclusively to the Administrator role and could result in privilege misuse by an adversary modifying the module during Mendix development.

Weakness: CWE-266 (Incorrect Privilege Assignment)

## Which versions are affected by CVE-2025-40571?


## How do I fix CVE-2025-40571?

No fix has been published for CVE-2025-40571 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-40571 being exploited?

There is no known exploitation of CVE-2025-40571 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-40571 and fix it if it is affected.

What it is: CVE-2025-40571 is a low-severity missing authorization vulnerability in Siemens Mendix OIDC SSO (Mendix 10.12 compatible), published on 13 May 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-40571 in the wild and no public exploit code.

Affected product: Siemens Mendix OIDC SSO (Mendix 10.12 compatible). 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-2025-40571/ (Markdown: https://insights.sbomify.com/CVE-2025-40571/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-40571
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-40571
- OSV: https://osv.dev/vulnerability/CVE-2025-40571

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-40571/
Summaries are generated and may contain mistakes; the official description above is the record.